Malicious PDF — malware analysis report

Static analysis result for SHA-256 569805b82e7aa781…

MALICIOUS

PDF

72.9 KB Created: 2020-10-26 02:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c3fe8f0892b4882745a40f4d9aaa0482 SHA-1: 9bf16f2a39394b0bab21bbe290d400d8ba3a59ec SHA-256: 569805b82e7aa781668083e5f357793e2932307eba3bab0c918eef51719f67a3
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing indicating a redirector to malicious infrastructure. The document body, though obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/123?keyword=aqua+line+metro+map+pdf In PDF document text
    • https://zuxuzesis.weebly.com/uploads/1/3/1/4/131438019/turapofovakave.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9503/9386/files/dry_erase_labels_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8011/2535/files/westclox_digital_alarm_clock_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4008/1573/files/33537625059.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8852309f-9396-446c-a39e-5ca9f4b21160/99921007633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a515bd2-c4b7-42ad-802d-bbd369bf7f32/sotijeduguluxupolejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc71e3f0-5b69-4ede-8818-5f55d8d51ab9/99864307465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e80a705-7e46-46f1-ba8d-a9853a899ff4/sekonirepivatijovewagufog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/61156676871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0076/8930/files/the_office_season_5_episode_26.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/amar_chitra_katha_archive._org.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/62144927039.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/jodeteg.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/naxogaman.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/jibijudemutales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6181/9584/files/tuxizufono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/31776882177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7885/3807/files/chapter_20_electricity_wordwise_answers.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB3 5124 bytes
SHA-256: 112daa574d85b8e1b3e81c92467ad47fd85df016c446b517917e5a83a96a3ccd
font_01_sfnt_off0000ac09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC09 12236 bytes
SHA-256: c8f7000ef93eb1e7316e0a2d6ff233146512d3fbaf39b243d7702273f2335cb9
font_02_sfnt_off0000d461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD461 17220 bytes
SHA-256: fc234b8eb30643eabeb60e82cebd78d87364bfbca8d00cfd45485979341cff6e
font_03_sfnt_off0000ed21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED21 6904 bytes
SHA-256: 19bfd994c316b7aa54058cfc5f3592548d6ca9886f519c3ed610a9a3b94b93a9
font_04_sfnt_off000104dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104DD 6112 bytes
SHA-256: 40522ca7052608dc63c1cd77c5d669b3f9d68ed22475cf966221b39a6c98e260

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