Malicious PDF — malware analysis report

Static analysis result for SHA-256 877ed0cf563ea597…

MALICIOUS

PDF

57.4 KB Created: 2020-08-22 00:16:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 410cc4e5aaa0a294238159307f1368ef SHA-1: 5f84a29b2773653b3d9b008b0fd7ad13a6b6f8a9 SHA-256: 877ed0cf563ea5978dd9c474c2c02f9f762cbd9f280920c0f49baafe3e1d6b17
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a primary redirector identified as 'https://ttraff.ru/pify?keyword=digital+marketing+interview+questions+pdf'. Heuristics indicate this is a malicious redirector and part of a link farm, suggesting a phishing or spam campaign. While no scripts were extracted, the PDF structure itself facilitates the redirection, and the content is designed to appear as a legitimate document to encourage clicks.

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=digital+marketing+interview+questions+pdf In PDF document text
    • http://sanaw.bwfraser.com/uploads/1/3/1/1/131164278/kabegagor.pdfIn PDF document text
    • http://files.iron-horse-adventures.com/uploads/1/3/1/4/131438111/2172096.pdfIn PDF document text
    • http://files.kakneslandscape.com/uploads/1/3/1/4/131406744/c435f12751035a2.pdfIn PDF document text
    • http://files.rayrodeo.com/uploads/1/3/1/3/131383934/5510a07acc203f.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/1/0433/6032/1691/files/53851416698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6778/8712/files/jawexojukowizuged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2040/1316/files/lokotupinalujexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4125/9671/files/brisbane_city_centre_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/aws_infrastructure_as_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/8888936047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3195/1517/files/structure_des_cellules_animales_et_vgtales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3583/6061/files/fax_cover_sheet_sample_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1030/1847/files/dierks_bentley_shoreline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/clozapine_davis_drug_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/95629615210.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98E4 5700 bytes
SHA-256: ee5c9a7cb3d6c5d072e0dea47b3ad1415507da9e636864a230b0d83ddf7fb187
font_01_sfnt_off0000ac47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC47 14176 bytes
SHA-256: 3ebd434cbecd0b8ed16658efd46054de27c065a5dca7a309a771c3982117daff

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