Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ddb38302d3e486…

MALICIOUS

PDF

91.9 KB Created: 2020-08-23 20:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 996d0f047060d26d4fef77b0552f3068 SHA-1: 3ff13fe537b81d747d6e74887836658b315e77ff SHA-256: 52ddb38302d3e486319dd61c0e5847e940ded02659f692b1526f3acdfe1a8cb9
202 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, many of which point to Shopify domains hosting other PDFs, indicative of a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=fermented+goat+milk+for+dogs+answers'. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of urgency language further supports a malicious intent, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=fermented+goat+milk+for+dogs+answers In PDF document text
    • http://files.decgallery.com/uploads/1/3/1/3/131384789/cc8b20d.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/1/0428/4104/7206/files/80685851134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/66078041102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/latest_awards_and_honours_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8738/9087/files/easy_origami_boat_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/spatio_temporal_autoencoder_for_video_anomaly_detection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7978/5891/files/13957524301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1652/6752/files/69651134306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/inseminacion_artificial_en_alpacas.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000113cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113CC 3540 bytes
SHA-256: b62ce9c0d09c3cdbb48786fe51410bbb293440a5fc0c6d07eb455f6c53b70511
font_01_sfnt_off00012060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12060 5128 bytes
SHA-256: 82eef20a6f892f398748a32f5dd160e180785c867e407022219255c1e6f5b57e
font_02_sfnt_off000131c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131C8 10112 bytes
SHA-256: 66ca5c3b69fcb62e9ce15cd6e49370fa1da6e70a582a0668aa2809d365e31be8
font_03_sfnt_off00015462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15462 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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