Malicious PDF — malware analysis report

Static analysis result for SHA-256 a173d683ec9c0d34…

MALICIOUS

PDF

41.7 KB Created: 2020-07-30 12:22:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d945e4c2ced3f8bd6270500c4715ff2c SHA-1: 83333d926cee97e6fe2c0f8ca42f58a20ae5dfd7 SHA-256: a173d683ec9c0d342294d66cbfe011623a0047d1e22c42acd3f6b04ed36d312d
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a factoring worksheet. This redirector likely leads to further malicious content or exploits. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, preventing a deeper analysis of its specific content beyond the lure.

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=factoring+trinomials+practice+worksheet+with+answers+pdf In PDF document text
    • http://files.dtccsmc.com/uploads/1/3/0/7/130775108/812174.pdfIn PDF document text
    • http://files.raincityultimateclub.ca/uploads/1/3/1/4/131406348/liwukikotefu.pdfIn PDF document text
    • http://files.savannahsprinklerandirrigation.com/uploads/1/3/1/3/131382239/9964792.pdfIn PDF document text
    • http://files.southcreekcandleco.shop/uploads/1/3/1/8/131856232/89e35.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/1/0436/8538/0246/files/mubapopetavugolelufel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/zewakafunevebidebaxozafos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/wivaxefubunafozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/2041481466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5280/files/fubulepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/paturivomizusozitakak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5800/3096/files/vijidifitajujopinusen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/zotuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/63294371308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5161/4359/files/guninotogem.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3D 5468 bytes
SHA-256: d065e0aef0cac823729bdd0cb37bce574e14935cf2454c17e5c5f609d23a1922
font_01_sfnt_off00006ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBB 13368 bytes
SHA-256: 915159d86076f8d581eeaa8800493a77f95807e19aa5085d43ad1e47626c8cc3

Open this report in the interactive analyzer, or submit your own file for analysis.