Malicious PDF — malware analysis report

Static analysis result for SHA-256 3565d16ddf179c01…

MALICIOUS

PDF

43.2 KB Created: 2020-10-28 10:49:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 509259e2e12701e9281c7ced002f165f SHA-1: 8521b611a5691d48f0027deb345dfcaed30af4ac SHA-256: 3565d16ddf179c015581cec0948b9cc23c9dbe32de986a47fcd26a113d19d6ea
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector URL associated with malicious activity. The heuristic firings indicate it's a malicious redirector and part of an SEO link farm, suggesting an attempt to drive traffic to malicious sites. The document body, though partially obfuscated, contains the redirector URL and other benign-looking URLs, likely to appear as legitimate content.

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://gettraff.ru/123?keyword=how+much+degrees+in+a+pentagon In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8055/7755/files/wrath_of_the_righteous_campaign_traits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4714/7427/files/41468389461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5459/0880/files/jolozumolanol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3884/6359/files/gadetafanivogamomibidanog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/3d_paper_craft_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/calendario_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/80714381833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7534/6847/files/real_bike_racing_game_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/something_wicked_this_way_comes_shakespeare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/29105737400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2856/0547/files/le_chatelier_principle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3962/9218/files/47893715572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8357/2409/files/22682456257.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/qasida_burda_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/87462036866.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/21595341124.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/define_behavior.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/65695698331.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/cardiopatias_congenitas_definicion.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

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000681a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681A 5508 bytes
SHA-256: 9532a18d369fe187319d15c98bdb851f0e925d99dab9acae2a8f8295b901c522
font_01_sfnt_off00007ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC1 10872 bytes
SHA-256: 98247ccb0eb470390ef383536391f3cd8fc7ac14927f760931cd8f3421d876b4

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