Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ff7c8c4b758e09…

MALICIOUS

PDF

62.9 KB Created: 2020-10-07 06:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 22e76f339f7cd0b03b2b7e94088ff3db SHA-1: 7ff02d855d080c618ee8e38e3ab8950ed7706b46 SHA-256: c3ff7c8c4b758e098bd1b7c7ef9f36a730dc1e9b8f5d5e3a098b667ac12b7445
194 Risk Score

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/strik?keyword=awg+current+rating+chart+pdf In PDF document text
    • http://semerus.newzionchurchofchrist.org/uploads/1/3/1/4/131454165/6897467.pdfIn PDF document text
    • http://dedilejo.stpaullevittown.org/uploads/1/3/2/3/132303354/juxekajebase_xejek_fimogijezum.pdfIn PDF document text
    • http://sikobipar.listentograndmomma.com/uploads/1/3/0/7/130738950/sajelo-gokeban-lazezawojikaza.pdfIn PDF document text
    • http://nabozefa.bolineboutique.me/uploads/1/3/2/6/132683085/2fd48c.pdfIn PDF document text
    • http://pupamaper.renovarr.com/uploads/1/3/0/7/130775365/ef444.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d5b17bed-bc5d-4e71-988d-2bd26b36fa5f/juximasujabimegumiri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4192253c-c428-4eb7-b07a-dd54ce729d1a/7729643964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18c5744c-18b8-471f-ae13-1408ffc46f25/19821270353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc26e2ef-f49d-4981-b265-2761a178ff46/kojoradivoxowal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/how_to_get_to_searing_gorge_from_burning_steppes_alliance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3366/files/zifusipavupadomezawemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7670/4673/files/34758669239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9091/2429/files/99855607330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5304/7195/files/93496425426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4254/files/27161819373.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BF 5060 bytes
SHA-256: a869fe24f19467f6af24d949cd10352aae1cb1342c821fbbed5d7c7565da458d
font_01_sfnt_off000097f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F9 16156 bytes
SHA-256: e045c54cc66acc4bfadeca3fef3b872a1d157e7a5355c17097de191df1629513
font_02_sfnt_off0000cb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB97 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f
font_03_sfnt_off0000e001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE001 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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