Malicious PDF — malware analysis report

Static analysis result for SHA-256 3638ed2f311b0292…

MALICIOUS

PDF

44.1 KB Created: 2020-08-14 13:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb7a81e7a87dec07384360d134855182 SHA-1: 817a699c5ad79c5e9b3df1b07581bb838aee2dee SHA-256: 3638ed2f311b0292ca0ae6ccec1f77a80bfb4fdef6f2c21ae0726f01363d838f
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of embedded links, many of which point to Shopify domains, likely for SEO manipulation. A critical heuristic identified a redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body contains the same malicious URL, suggesting the intent is to lure the user into downloading further 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.cc/pify?keyword=free+spanish+color+worksheets In PDF document text
    • http://tupod.hunnicuttscience.com/uploads/1/3/1/4/131453574/7393553.pdfIn PDF document text
    • http://files.andreas-skincare-bodytherapy.com/uploads/1/3/0/7/130739239/pejefoke.pdfIn PDF document text
    • http://files.sustainablecharleston.com/uploads/1/3/0/7/130775987/1794350.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/1/0430/9437/6605/files/vaxipemusixuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/xafamijewobosativedatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9094/7739/files/bingo_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/mopuviraletozatilif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/wuwamopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5533/0981/files/my_thirty_years_backstairs_at_the_white_house.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8325/9301/files/personal_statement_examples_for_university.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/47965585014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/buwuwunadikajofalojifel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/65th_bpsc_advertisement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/zoraxebovoniwiritorok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/dumilaposexudije.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_off0000639f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639F 4920 bytes
SHA-256: 4b571159e5badaf9d0e544a0d47f792ecc3d4409f022dffe406d276884d4bfb8
font_01_sfnt_off00007451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7451 9560 bytes
SHA-256: 9a40058a1e3a001ae4a84fbfd5581967592cbdd30cb81584f457d264bfe2dbaa
font_02_sfnt_off0000951f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x951F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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