Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e7cb2134a8470c…

MALICIOUS

PDF

44.1 KB Created: 2020-10-30 02:51:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5598ed5db1885c795b7bb0502cb2aa3c SHA-1: d08a7ecdd5362a8575c6e7f6c4649fe4c05b51d1 SHA-256: 95e7cb2134a8470c0a30e3fbac3807144bea53973b37ea078c245aa5dff3cc37
174 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with several pointing to known malicious redirector infrastructure. The document body, though partially obfuscated, includes URLs that are part of a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier also strongly indicated maliciousness.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://cctraff.ru/strik?keyword=function+of+the+organelles+worksheet+answer+key In PDF document text
    • https://vofixerexelisat.weebly.com/uploads/1/3/4/3/134311693/464a7.pdfIn PDF document text
    • https://wisizexabebaj.weebly.com/uploads/1/3/4/4/134461468/7c7a2d.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/sefaritonos-nukivafeka-retisebop-regaxumex.pdfIn PDF document text
    • https://digulowewuw.weebly.com/uploads/1/3/4/3/134363346/8830150.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/6721630.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/1/0505/1626/3083/files/last_day_on_earth_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0811/2818/files/sharp_32_inch_tv_stand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c332ce7-cd24-4bb4-937b-016c0b5f7826/95195886539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0263/2104/files/osrs_runecrafting_pouch_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2360/0286/files/18635047963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0038/5695/files/photo_to_converter_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4368/5030/files/power_of_attorney_form_nj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9304/2362/files/vofotemo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADD 5356 bytes
SHA-256: 7c28d2d2b0f1fc8592ed14ab1a1f9dbc05fae8af5405e5780b1322c6ca636760
font_01_sfnt_off00007d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2E 11388 bytes
SHA-256: 02219fe56f97be3c081c6893d6e65244f6f977970ee4778ad2d6b00971158ece

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