Malicious PDF — malware analysis report

Static analysis result for SHA-256 61df96ad533f2ecd…

MALICIOUS

PDF

47.3 KB Created: 2020-08-25 06:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 170ce5ec137ee8548c90b235c99cba85 SHA-1: c292dff18ac682e4d12b7b4b88bdad48e39a100e SHA-256: 61df96ad533f2ecd6f168705cffde420e3a5a9233dbe93b5515cd1ea5b9b5a6b
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'chess free for laptop'. The presence of a malicious redirector and a large number of external links suggests an attempt to drive traffic to potentially harmful sites, likely for phishing or malware distribution.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=chess+free++for+laptop In PDF document text
    • http://files.rewalsarsponsorship.org/uploads/1/3/0/9/130969498/bipigi.pdfIn PDF document text
    • http://files.412studentministries.org/uploads/1/3/0/7/130775557/745dabed6.pdfIn PDF document text
    • http://files.cmssalvage.com/uploads/1/3/1/4/131406947/1571637.pdfIn PDF document text
    • http://files.johnjosephhayes.com/uploads/1/3/1/8/131871416/2477916.pdfIn PDF document text
    • http://losimuri.sandydex.com/uploads/1/3/1/4/131454762/molilevune.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/1/0431/5774/9917/files/gilulidekazufexomave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3576/1562/files/short_term_causes_of_ww1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/54395390770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/rukebobolubeluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/fawedevozutebupekubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/povutaweza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6221/4304/files/35506199080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/tipabavatibino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4542/7102/files/90438416639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.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_off00007cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCA 4896 bytes
SHA-256: 78ff076a5a32800941e5b18c18afe345c14f32388fcea2497e2c41e686571fcd
font_01_sfnt_off00008d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D68 10192 bytes
SHA-256: 175a3311653547dd5103fa15fcd0b5f9c0270944163797d1f39fc05a14dba4cf

Open this report in the interactive analyzer, or submit your own file for analysis.