Malicious PDF — malware analysis report

Static analysis result for SHA-256 023ae79d758dcf97…

MALICIOUS

PDF

39.7 KB Created: 2020-08-08 13:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37988073da699e201745aed436dda893 SHA-1: 3efc80d90ab2b2484ca9043eb250991f1aa61ebb SHA-256: 023ae79d758dcf973cfab343a9de9859e21ad8168352f94e447cd60389e8954c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to redirectors and SEO link farms, indicating a phishing or scam attempt. The primary malicious URL, https://ttraff.ru/pify?keyword=career+counselling+questionnaire+pdf, is presented as a career counselling questionnaire, a common lure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest malicious intent, likely to redirect users to a phishing or malware distribution site.

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.ru/pify?keyword=career+counselling+questionnaire+pdf In PDF document text
    • http://files.modernhomebuyers.us/uploads/1/3/0/7/130738755/vaginixuwew_zefisop_wunim_bifekiforeju.pdfIn PDF document text
    • http://tuvak.onondagacommunitychurch.org/uploads/1/3/0/8/130814328/bedujowizawepi.pdfIn PDF document text
    • http://files.gbccollege.org/uploads/1/3/1/6/131637714/wirupivimivar_jabaxasosokabup.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/1/0440/0496/6565/files/telling_time_analog_clock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/befaladosomesojajuxokef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/20050729048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/vemagavelaxiboju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/jukekebopejuwatogizej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/28369723146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/cambridge_english_empower_b2_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/29763024547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6322/1155/files/xajunufojugikakapululijik.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_off00005d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D52 5352 bytes
SHA-256: 70f8a01b172d4dc27ae3520ba5c6fd72aea4125735738ae294545f219acdb4cf
font_01_sfnt_off00006f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F85 10104 bytes
SHA-256: d5c5787efa85e54246541e54381a8650522758f20c32f0cb1f0463278c487214

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