Malicious PDF — malware analysis report

Static analysis result for SHA-256 880b94fcdc0ba240…

MALICIOUS

PDF

44.5 KB Created: 2020-08-08 13:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1663541e5cf50e7dd0406e36c2064e7b SHA-1: c82ea29bfdc02b5f5cf76a9ab886dc52ce5a79a6 SHA-256: 880b94fcdc0ba2403e4cd8a9865de83eb88fc0d56be75f630396ea1decbab339
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many pointing to a redirector service (ttraff.cc) which is known malicious. The document body itself is heavily obfuscated but contains a reference to the same redirector URL, suggesting it's the primary lure. The presence of numerous PDF links and a redirector indicates a likely phishing or malware distribution campaign, potentially using SEO tactics to appear legitimate. No scripts were extracted, but the link farm and redirector are strong indicators of malicious intent.

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=calcium+nitrate+fertilizer+pdf In PDF document text
    • http://files.artintr.com/uploads/1/3/1/4/131438161/8000679.pdfIn PDF document text
    • http://files.ucsdspeechanddebate.org/uploads/1/3/0/7/130775465/jodab.pdfIn PDF document text
    • http://moxitatub.leef.org.uk/uploads/1/3/0/8/130874253/nevipedonuvera.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/1/0430/6350/9141/files/65847044871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/guretemotunumal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/63107896578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/advantages_and_disadvantages_of_computer_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/5327303612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7135/7596/files/sadeporuwedasuxapeguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0886/0065/files/aircraft_engine_design_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/74611555095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1418/5372/files/10851110459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/15590399227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/h96_max_plus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/bibimonelufurujif.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 3

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_off0000647e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647E 4968 bytes
SHA-256: 1de030c4d9bf72a1a5e40a62f4fcdb166839706b3cfc94219ee31e3db79071fc
font_01_sfnt_off00007551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7551 9852 bytes
SHA-256: 635920b1175f76a523813774d0aa282370d1ffdd7084483456cbcd4bb36df08c
font_02_sfnt_off00009708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9708 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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