Malicious PDF — malware analysis report

Static analysis result for SHA-256 aecee8673ca19ac3…

MALICIOUS

PDF

60.0 KB Created: 2021-02-10 07:37:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a82600551419dd45fd188828de2df44d SHA-1: 4cc74c9b90a0dcc0bd68f3aaa72c92e1cbe5cf8f SHA-256: aecee8673ca19ac35e112fbcea56e7c4101bc265307b75ad483aa38d6580dde2
242 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable domains and Weebly-hosted files, indicating a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, and ClamAV detected it as a phishing trojan. The ML classifier also flagged it with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9570

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/aws?utm_term=carpool+karaoke+the+series+free In PDF document text
    • https://nobozemesatib.weebly.com/uploads/1/3/0/8/130874372/7985526.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/lafojojunuregerawenivu50drh.pdfIn PDF document text
    • https://rokozozo.weebly.com/uploads/1/3/4/4/134498035/josufuz.pdfIn PDF document text
    • https://nodemudikukurev.weebly.com/uploads/1/3/5/3/135348567/jenesopinalizogowi.pdfIn PDF document text
    • https://tevumusavobe.weebly.com/uploads/1/3/4/1/134108657/gagalonojol-zelofub-nolumabi.pdfIn PDF document text
    • https://vixufavem.weebly.com/uploads/1/3/2/6/132683014/zodij.pdfIn PDF document text
    • http://delojenopow.66ghz.com/uspstf_colon_cancer_screening_guidelines_2019.pdfIn PDF document text
    • https://wefogazasu.weebly.com/uploads/1/3/4/8/134880183/pemidenutidanefa.pdfIn PDF document text
    • http://a1metromovers.com/kung_lao_hat_trick_guideve98o.pdfIn PDF document text
    • https://nobuzuza.weebly.com/uploads/1/3/4/7/134757083/bigebikunitorumijelu.pdfIn PDF document text
    • http://pagikojezokatu.rf.gd/beyond_bigger_leaner_stronger_bonus_report.pdfIn PDF document text
    • http://nofulevar.epizy.com/penny_dreadful_episode_guide_season_1.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/phpspreadsheet_install_linux.pdfIn PDF document text
    • http://funazowo.rf.gd/ao_smith_35000_water_softener_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/41592726561.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/settlement_sheet_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/kijelefaj.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/sum_of_arithmetic_series.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d48d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48D 5796 bytes
SHA-256: 028c5894dfcd9f9632b62a92a9ebb53461816eb2b675a614931c1802a67e2723

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