Malicious PDF — malware analysis report

Static analysis result for SHA-256 d137a1379f065ad5…

MALICIOUS

PDF

58.6 KB Created: 2020-07-24 09:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7baa6d6f39c8cfe688aba4369466681 SHA-1: 58ce69cb4cddd8c2457a8dfa34e96a05cfbc736e SHA-256: d137a1379f065ad5abcfcc77dad51d51a691ef2431b42d1331f0fa7ba7f9a47f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'attachment theory psychology pdf', suggesting a lure to disguise the malicious links. The primary malicious URL identified is ttraff.com, which redirects to a page with a keyword related to the document's apparent theme.

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=attachment+theory+psychology+pdf In PDF document text
    • http://files.jjwhitememorial.org/uploads/1/3/1/4/131406211/sodage.pdfIn PDF document text
    • http://files.katiegbryant.com/uploads/1/3/2/6/132681233/nanirijin_xuwurotusexozuj_rojuvogenabu_zunadixogida.pdfIn PDF document text
    • http://files.loveadelyn.com/uploads/1/3/1/3/131384604/1988225.pdfIn PDF document text
    • http://files.elegancebydesigndbq.com/uploads/1/3/1/8/131872054/gosabi-gavivixudot.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/1/0428/9835/8432/files/8003629611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4636/2533/files/jizizonil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3086/3259/files/87143568795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/23506225611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonixalekena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/1563183871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4045/6360/files/47873049981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/rigalubejigajutoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8312/7201/files/37336786062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/lubuwubenijuxisekike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/rapukexuroxiwixowadajinok.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_off0000a7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7EA 5400 bytes
SHA-256: b7c881481a8a3824871d032ab407080f96cf87386f118893889d311b7eba571f
font_01_sfnt_off0000ba1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA1F 10256 bytes
SHA-256: 8979691d2ee8fbfcbe0ca1653cf98997db1f480cb1546a118f7910a05ff1445d

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