Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdfdef0b23643db9…

MALICIOUS

PDF

54.2 KB Created: 2020-08-03 11:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b58b40bc378202c2ebc97ff02745380 SHA-1: cd82f9cf16c0bb58d8bdfe8818b9bd065f133e39 SHA-256: cdfdef0b23643db9d77f6596f991853175458d6edef3d34432bfb0945a083f48
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains embedded JavaScript and numerous links, with a critical heuristic identifying it as a malicious redirector link pointing to 'ttraff.ru'. Another critical heuristic flags it as a PDF SEO link farm, with many links pointing to Shopify domains, but the primary malicious link is to 'ttraff.ru'. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to a site that likely hosts further malicious content or phishing pages.

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=minecraft+giant+oak+tree In PDF document text
    • http://files.cpang-architects.com/uploads/1/3/1/3/131398144/5023264.pdfIn PDF document text
    • http://bovimo.lotsofbundlez.com/uploads/1/3/1/4/131483138/sodewapubavazox.pdfIn PDF document text
    • http://files.sophiedesousa.com/uploads/1/3/0/9/130969526/9324095.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/1/0431/0938/4345/files/zamakisumiduzeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/worlds_hardest_game_cool_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/metroid_prime_2_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/43129839603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/sowevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/8440811038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1351/9006/files/how_to_clear_cache_on_macbook_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/linulijokimami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/mw3_hack_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/mtg_arena_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/lezunotekulebuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9951/2231/files/sunovavulidukoxopirowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/84192278757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4861/5579/files/zamuvibojoximen.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000925c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x925C 4908 bytes
SHA-256: d791ba6d973a8368bdd7f1c1365ac99b70e8382d5f5d401bd8993c67d4f62ac9
font_01_sfnt_off0000a339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA339 12068 bytes
SHA-256: a30729a7f7102d34caf8485f59ff5bcfb0054e8a541ec0514f5c6e98de651baa