Malicious PDF — malware analysis report

Static analysis result for SHA-256 31ef01a6cda26e64…

MALICIOUS

PDF

49.4 KB Created: 2020-07-31 04:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c1b2583a5d91fa59b3a99bf752d2459 SHA-1: ea55c3ed48782cf9ca96f086a0dc5c90fc083ae5 SHA-256: 31ef01a6cda26e64926bb6e83e5735e445680839eb170939bf01cc3176557445
194 Risk Score

Malware Insights

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

The PDF file contains a lure for 'physics formulas for class 10 pdf download' and embeds numerous external links, including a redirector link to 'ttraff.com'. This indicates a phishing or scam attempt to drive traffic to malicious infrastructure. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malware through a large number of seemingly legitimate links.

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=physics+formulas+for+class+10+pdf+download In PDF document text
    • http://files.carnegiehouse.co.za/uploads/1/3/0/7/130775080/385af39e3d09.pdfIn PDF document text
    • http://files.olympicclassictbirds.com/uploads/1/3/0/7/130775049/lefivunuxojaweg.pdfIn PDF document text
    • http://files.qmworkplacement.com/uploads/1/3/1/8/131857334/6086410.pdfIn PDF document text
    • http://files.photos2themax.com/uploads/1/3/1/4/131438077/6701354.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/1/0427/4293/9814/files/52710296449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/67158147532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2929/0390/files/42999340284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/97012910281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57727452667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/78472722360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/53268195025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/jelotesar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/92312218028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0323/8811/files/55566910600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8172/7129/files/6216726489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/46379183351.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 7

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_off000080b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B1 5468 bytes
SHA-256: ff587687d97fd9707c8bc54a5098885382139c2093c69aa88fa8562219bd0c87
font_01_sfnt_off0000931f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x931F 11140 bytes
SHA-256: a4b3beb566a57126e16d6e1de32586c9259775b4e9af8a625051d1597bd8d629

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