Malicious PDF — malware analysis report

Static analysis result for SHA-256 9936f6a61a726c48…

MALICIOUS

PDF

48.9 KB Created: 2020-10-02 20:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: dcbb0794ee9df1ce28856af6d68e56ed SHA-1: 70222a450de77c0e43ee24885564371081ba49d3 SHA-256: 9936f6a61a726c48af252e74b0af98a3c5b3fa06d0fe87de3c340d45a878c68f
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ggtraff.ru'. The document body, though partially obfuscated, includes text related to 'Uf student self service' and the malicious URL, suggesting a phishing or scam lure. The presence of a large number of external PDF links also indicates a link farm, often used for SEO manipulation or to distribute malicious content.

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://ggtraff.ru/pify?keyword=uf+student+self+service In PDF document text
    • http://files.themusicstudiostafford.com/uploads/1/3/1/4/131452858/8092683.pdfIn PDF document text
    • http://files.britneyjoanthomas.com/uploads/1/3/0/7/130739069/tepilazuzadid-bukazalil-rurowosigetitug.pdfIn PDF document text
    • http://files.muslimsjobs.com/uploads/1/3/1/1/131163667/tepirelex.pdfIn PDF document text
    • http://files.hearyshoofheartedfarm.com/uploads/1/3/0/8/130813510/8751577.pdfIn PDF document text
    • http://files.mountainspassion.com/uploads/1/3/0/7/130775528/surelekekibawoz.pdfIn PDF document text
    • https://site-1037282.mozfiles.com/files/1037282/mowusune.pdfIn PDF document text
    • https://site-1038517.mozfiles.com/files/1038517/52287431004.pdfIn PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/rilanebovisiniwirolipe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4442027-efc7-44b6-9854-e6009ba6786f/finisisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30646928-123d-47b6-8472-8f58fc30ae83/41826703640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f215e07-84ca-4982-9458-2371f144e9a6/kasup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9424/0151/files/lambo_door_kit_for_dodge_challenger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/68019451587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5228/1255/files/3214188794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5672/4128/files/kakoleg.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_off0000825d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825D 4856 bytes
SHA-256: 3dee0ec26a289d0e53cc098f796c33888a76a0b7962d24269913e383966fe90f
font_01_sfnt_off00009300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9300 10396 bytes
SHA-256: 037e4dd6687310d964e54f2074af402353ad26ee306f8426636d467f28b3b9a7

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