Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f8bdd1980a4d63…

MALICIOUS

PDF

185.4 KB Created: 2020-10-29 18:37:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88127e9b0e82fe9238cc81ad82d4e264 SHA-1: 73e9e8d4f751c579bcb3cd376836eb2db2c2b2b2 SHA-256: 20f8bdd1980a4d6338b09dca0069b597329eee082aaac9cc5a7a67ceb6f89a4b
134 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a malicious redirector and an advance-fee scam lure. The embedded URL points to a known malicious redirector infrastructure. Although no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest an attempt to redirect the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/aws?keyword=caritas+in+veritate+international
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f8733862179b.pdf
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f87b7f080591.pdf
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/sapepapifa-kemop-soravixaleju-rafemuson.pdf
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/3585070.pdf
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f8b9635c9968.pdf
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5f8d6f18a7656.pdf
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5f91fc91d812c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1926/2363/files/26215375335.pdf
    • https://cdn.shopify.com/s/files/1/0505/5673/1575/files/30196436527.pdf
    • https://cdn.shopify.com/s/files/1/0492/4050/6524/files/laweferimubibirutenesiz.pdf
    • https://cdn.shopify.com/s/files/1/0506/8619/7940/files/43341489757.pdf
    • https://uploads.strikinglycdn.com/files/387f4b53-6430-4354-a78e-5a79f3ca07f6/dosimafelugaxufokibuka.pdf
    • https://uploads.strikinglycdn.com/files/1f49f724-dc01-44a7-b9a1-701bf05c0350/63791688236.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002981f.bin
d8ef148c594adba1946aa7d95f188f3f33f69c77bc22762a1a4a57bcfd89a796
pdf-font-stream PDF embedded font (sfnt) at offset 0x2981F 2960 bytes
font_01_sfnt_off0002a2a1.bin
72da393a5fe35248fb3426296e6b230a05f38bd24695d1e46e99be752305be53
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2A1 4644 bytes
font_02_sfnt_off0002b277.bin
f8a8229ded0a9eed45b070bd70fb8a253bedc295e4060bece5739c292b1429cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x2B277 10896 bytes