Malicious PDF — malware analysis report

Static analysis result for SHA-256 6616ef323e885f59…

MALICIOUS

PDF

53.5 KB Created: 2020-08-08 04:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 639af90767635003fe764047bc40c267 SHA-1: cba2dfd15d4efc675808685a5776c0814e407092 SHA-256: 6616ef323e885f59f9bd01e06711e1ba53a9b16b27947bf0202762c9b5cf900f
194 Risk Score

Malware Insights

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

The PDF contains multiple links to a redirector service (ttraff.com) which is flagged as malicious. The document body also contains the same redirector URL, suggesting it's the primary lure. The presence of numerous external PDF links further indicates a link farm or SEO poisoning attempt to drive traffic to malicious sites. No scripts were extracted, but the embedded URLs are sufficient to classify this as a malicious redirector 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=piero+calamandrei+demasiados+abogados+pdf In PDF document text
    • http://files.ashleyamanda-photography.com/uploads/1/3/1/3/131398177/lefegi.pdfIn PDF document text
    • http://larubosop.dimensionsbydan.com/uploads/1/3/2/6/132681352/videg.pdfIn PDF document text
    • http://doxuzumat.westendprimaryschool.co.uk/uploads/1/3/1/6/131636664/guxevolujob-sutuw-madip-xisifuzesegib.pdfIn PDF document text
    • http://files.ame-geolab.com/uploads/1/3/1/6/131637402/gofibukazizo_texoji_beweku_dipopogi.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/1/0432/0673/8079/files/metegijixakig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/49037194282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/subomiganuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87960197539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1110/3128/files/nationwide_mortgage_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/50173536560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/beall_s_list_of_predatory_journals_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/ridatatuluzig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7614/0710/files/4t65e_rebuild_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8995/2922/files/79304811535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/wuwex.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E9 5324 bytes
SHA-256: d062caca6e7c7a454100bf53ccd4a1df9c1e82c3bfe6550026973b280762ff60
font_01_sfnt_off000095d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95D5 11216 bytes
SHA-256: 56a1da544a4eac1da0d00f6ed0d187752eb14adb91dac4cb5c35f3719269c2fb
font_02_sfnt_off0000ba86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA86 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3