Malicious PDF — malware analysis report

Static analysis result for SHA-256 22a7daa741941199…

MALICIOUS

PDF

46.2 KB Created: 2020-08-04 21:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c1e44bf7c4be744e61847403d5fa8b8 SHA-1: 7308736f20af17782cc694ed533f9b4788b0dc2b SHA-256: 22a7daa741941199fc52e12ee4ef8494675b8725bce1648e33e9d5192a803ac6
202 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, indicative of a link farm. One critical heuristic identified a direct link to a known malicious redirector, ttraff.ru, which is further obfuscated by a keyword search parameter. The document body, though heavily corrupted, contains text related to a Bosch fridge freezer manual and urgency lures, suggesting a social engineering pretext to encourage link clicks. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bosch+fridge+freezer+manual+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bosch+fridge+freezer+manual+pdf In PDF document text
    • http://files.nettiesonline.com/uploads/1/3/0/9/130969472/dccddbf.pdfIn PDF document text
    • http://files.worldwide-idls.com/uploads/1/3/0/8/130873921/nadumepalukesel.pdfIn PDF document text
    • http://files.sheiladavis.ca/uploads/1/3/0/7/130776481/c9e448.pdfIn PDF document text
    • http://files.fireprotect.me.uk/uploads/1/3/1/6/131606694/914d628b0.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/1/0434/7507/5225/files/fajatedekopafofeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7713/0647/files/john_deere_345_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2938/1791/files/xejerutojitamipodukunapip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/95317273131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/xekajod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6801/2182/files/kirepirojiluda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9675/1771/files/52878688330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/46267068741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/wazaxojugorav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/34694023672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3398/4161/files/wasapitadusuworemetofoxow.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 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000760e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760E 5668 bytes
SHA-256: 8c821dcbfe083521f6ed499c33389108ae4a61fca436dcece28f0aa3bf973a29
font_01_sfnt_off00008939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8939 10272 bytes
SHA-256: 6e7efd93a3c5bacdacb1ac36d2bbafbdeec3bbe12d272f6c0d5f240dd3bceb4d

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