Malicious PDF — malware analysis report

Static analysis result for SHA-256 5373319f270d4acc…

MALICIOUS

PDF

44.0 KB Created: 2020-08-01 04:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1faaaf1c954b34244978533b180efd10 SHA-1: fc1bf3885c3e4d5a714113feb923efd287fe726e SHA-256: 5373319f270d4acc94bc7f89acbacbeb26e75d47efb825d71e9170a9b0ea28c5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector, ttraff.com, which is associated with malicious activity. The document body text, though heavily obfuscated, contains the string 'installesd dmg download', suggesting a lure for a malicious download. The presence of numerous links to PDF files hosted on Shopify, many of which are likely part of a link farm, further supports the malicious intent of directing users to external, potentially harmful, 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://ttraff.com/pify?keyword=installesd+dmg+download In PDF document text
    • http://files.flblinds.com/uploads/1/3/0/7/130739615/mutuburiliwa-fuzefomo-zuzekovixutus.pdfIn PDF document text
    • http://files.jamreads.org/uploads/1/3/2/6/132681670/vetifam_suwejekebimiba.pdfIn PDF document text
    • http://files.nileswesttheatre.com/uploads/1/3/0/7/130740116/c109eace814a5ba.pdfIn 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/1/0433/3341/9160/files/31779907148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/vufajowobizirupuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/79350074612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/57885443429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/bupas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6649/7960/files/full_hd_1080p_telugu_movies_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0949/7496/files/gorilagipibusoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/pigijipuxexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8534/8510/files/62477764001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5014/6723/files/94829494996.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_off00006667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6667 5076 bytes
SHA-256: 8983525a86a2b5435f31f6e10fbe416fc081a8f3d77bd3922b1f791836d22a00
font_01_sfnt_off0000779e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x779E 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000802b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802B 10152 bytes
SHA-256: b56bf56e5fed244f4d265cd6f2021255da1567e9da0b913260601ed9bb6dd66a

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