Malicious PDF — malware analysis report

Static analysis result for SHA-256 f830d3b2cf086e05…

MALICIOUS

PDF

42.3 KB Created: 2020-07-29 06:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80526e7587aea689f131f171daefa8b2 SHA-1: 7379ce48545f20469ee680c36dca57999fd0fab0 SHA-256: f830d3b2cf086e050a5029e59886e84c424f00a7f7f98ca72fba6efdf1bcdafe
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a lure for 'Schoology login information'. The document also contains a large number of embedded links, many hosted on Shopify, suggesting a link farm for SEO poisoning or to obscure the final malicious destination. The primary malicious IOC is the redirector URL.

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=schoology+login+information In PDF document text
    • http://files.thisiswitchdoctor.com/uploads/1/3/1/8/131856012/2ff0ce4b3707bf.pdfIn PDF document text
    • http://files.bbluntsheabutter.shop/uploads/1/3/1/3/131383018/bajof.pdfIn PDF document text
    • http://files.istmstyles.com/uploads/1/3/2/6/132681586/4704599.pdfIn PDF document text
    • http://files.lyricsandpoems-cacreed.com/uploads/1/3/0/8/130813821/6881740.pdfIn PDF document text
    • http://files.west150nyc.com/uploads/1/3/1/4/131406606/4e451.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/1/0431/4185/7448/files/nepixog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8384/1190/files/vegumamegegufiresubekokux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/25733906240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/16960945035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/33278117952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/toxuwudisomajonuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4942/5823/files/sezatajogopel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4528/8093/files/wurulupejefelikijufof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/14691049640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/fuwabavore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1901/7124/files/8249330847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7683/7785/files/kuvazepofigedixubonej.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6767 4992 bytes
SHA-256: cc499205589d2e5bfd63ae9a9a9b6025bc32e17239e94a9ec7de848bc06b3aa1
font_01_sfnt_off0000781d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781D 10600 bytes
SHA-256: 1f47dde479a8ee0f86da022348f506e775b511ee3b5a1f30949271cbc5770ba4

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