Malicious PDF — malware analysis report

Static analysis result for SHA-256 8729c3d5e606ba29…

MALICIOUS

PDF

50.1 KB Created: 2020-08-17 14:03:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28c5b209faf37976654858b3323498d9 SHA-1: eecba38357a51425a2ae59ecdb5d41962ffd9c8f SHA-256: 8729c3d5e606ba29cdef327008098922f5fecc6faa604213146a2a99c473f1b5
174 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating an attempt to lead users to harmful content. The heuristic 'SE_CALLBACK_LURE' suggests a phishing or scam pretext, likely related to billing or security issues. Although no scripts were extracted, the presence of embedded URLs and the ML classifier's high confidence score strongly suggest malicious intent.

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://ttraff.ru/pify?keyword=msds+safety+data+sheet+pdf
    • http://files.naomijacksonwrites.com/uploads/1/3/1/4/131408170/1789091.pdf
    • http://files.child-poverty.org/uploads/1/3/1/3/131397927/1342505.pdf
    • http://files.sweetbeesushoney.com/uploads/1/3/1/3/131398000/6304155.pdf
    • http://files.rachelbrauer.com/uploads/1/3/0/7/130740264/vinibiwekamitivimibe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1157/9809/files/persona_moral_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0439/2691/3179/files/acknowledgement_for_a_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/15354905288.pdf
    • https://cdn.shopify.com/s/files/1/0428/8941/2764/files/tsc_appraisal_form.pdf
    • https://cdn.shopify.com/s/files/1/0450/3542/1846/files/lord_of_the_rings_concerning_hobbits_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/3928/4645/files/1717935510.pdf
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/basic_engineering_drawing_book_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/wojesiroxuzixiwud.pdf
    • https://cdn.shopify.com/s/files/1/0435/4847/5541/files/99593781692.pdf
    • https://cdn.shopify.com/s/files/1/0435/4428/1247/files/john_deere_la130.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2174/files/certificado_de_origen_mexico_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/14218488145.pdf
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/arabic_to_urdu_dictionary_book.pdf
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/34412029079.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086e2.bin
cbdcc21cbfec4c9f0d674779d0e11299a666e08fc6bd4c1993805c6a50a46bbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86E2 5108 bytes
font_01_sfnt_off00009853.bin
6695dc764bb02d77106a2804a2c056c0799f83d8a7e16de8044677dc95f0bab9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9853 10360 bytes

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