Malicious PDF — malware analysis report

Static analysis result for SHA-256 79bfd345fb8d667e…

MALICIOUS

PDF

80.3 KB Created: 2020-08-26 11:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60b4365020487edacdeb54b071fddd65 SHA-1: 837e4e6eb8db736bbf93d6f33d7c3a06a0d37a72 SHA-256: 79bfd345fb8d667e9041a51f355331a0ccae7381c3f11028f5141eb77a2362b7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that point to a redirector URL, which is a common tactic for phishing or malware distribution. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The ML classifier strongly indicated maliciousness, and multiple heuristics fired for malicious redirector links and link farms.

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.com/pify?keyword=when+is+the+solar+eclipse+in+india In PDF document text
    • http://files.cristinaaucone.com/uploads/1/3/1/3/131378835/simizipodotifub-xokikij-moresoto.pdfIn PDF document text
    • http://files.mnjeweler.com/uploads/1/3/1/4/131437740/fomurogoxufirofaliz.pdfIn PDF document text
    • http://kitadoge.tonisenatore.com/uploads/1/3/0/7/130776485/1385827.pdfIn PDF document text
    • http://files.traumayellow.com/uploads/1/3/2/6/132680808/dfbcf03178b.pdfIn PDF document text
    • http://files.photosbysarahtucker.com/uploads/1/3/0/7/130775174/fekokirubuxugor.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://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/81241476152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4098/1660/files/525028880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0999/1075/files/gizuwunuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6302/5567/files/batexobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6707/9830/files/32726587962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8469/3160/files/50465988460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/57419188289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8359/files/63853647371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/gefibujefufejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1548/7135/files/92555319878.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE601 4964 bytes
SHA-256: f71b12e097d4a7949492ffd80f5a33e2a4a10241617da31a43916740513dc27c
font_01_sfnt_off0000f6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D5 15244 bytes
SHA-256: f75826f7201a9a4bda6400f169083960c24a352065ebb77b60754266220dab0b
font_02_sfnt_off000125ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125BA 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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