Malicious PDF — malware analysis report

Static analysis result for SHA-256 2849bf70412a08a9…

MALICIOUS

PDF

47.8 KB Created: 2020-08-08 04:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5694eb1d55d673bb26afe60e90e6a141 SHA-1: 509d4aa7f1c0d2b866143bee1bec78ad63bd295c SHA-256: 2849bf70412a08a9534aa1863287774877930fef0814540aba0926efde97fda7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link directs to a known malicious redirector at `ttraff.ru`. The document body, though heavily obfuscated, contains the same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. The presence of numerous links, including the malicious one, indicates a link farm or SEO poisoning tactic to attract victims. No scripts were extracted from this sample.

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.ru/pify?keyword=difference+between+array+and+arraylist+in+java+pdf In PDF document text
    • http://files.nature44.com/uploads/1/3/1/4/131406403/9666328.pdfIn PDF document text
    • http://files.pikeboarddd.com/uploads/1/3/1/3/131379296/feluzadoseb.pdfIn PDF document text
    • http://files.yellowheadauctions.com/uploads/1/3/1/0/131070212/xabalaforiv.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/1/0439/0119/0299/files/79186079532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7580/3038/files/14266069660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8385/7053/files/sotonabixutolukovodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3990/6209/files/gugeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/3172776552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8047/4014/files/60483271544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4672/1946/files/41281617763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5684/0354/files/architectural_rendering_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/3551412441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6983/2342/files/double_round_robin.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 5

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_off000065e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 5296 bytes
SHA-256: ecc590198148bb73f4d8836f43fe2f87d52baa0af66ca71519c710363fd2f99d
font_01_sfnt_off00007813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7813 13852 bytes
SHA-256: 577516e0c54c96a159457958c6e57aad9b3b62b664cacc44e2bc4a265ea07f9a
font_02_sfnt_off0000a3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3EA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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