Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b6602654cb83ac…

MALICIOUS

PDF

380.6 KB Authoring application: Skia/PDF m150 Google Docs Renderer First seen: 2026-05-25
MD5: 278b0e97fb709414f95a3496f076b7ec SHA-1: 6397546bcdb1ddc9da0a0fb6b76eee06de769b0b SHA-256: c6b6602654cb83ac74b299eec0431e1cbb9aabb80e09dd299d619f60bc9f9d29
80 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains a large amount of repetitive text, consistent with a phone number stuffing scam designed to overwhelm the user. The heuristics indicate a travel support phone scam and a general callback phishing lure, suggesting the document's purpose is to trick the user into calling a fraudulent number for fake support.

Machine Learning

  • Nyx PDF Classifier clean score 0.0001

Heuristics 2

  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
🗂 Part of campaign: volaris.com 813 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_030_off0003847c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3847C 152236 bytes
SHA-256: d9008e3fc4defd30dc2af30ce42f87246d6e70a2b9692ed669ead2d0e5b2d80c
stream_042_off00048974.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48974 18240 bytes
SHA-256: ab5f571bf0cd18a495d3ad2095b48edc8a90a4ff34d2cb5d46c82eaa51a75def
stream_046_off0004a8f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8F0 18240 bytes
SHA-256: 33e060654ed1208fc726f2323a8a9e7d9de6f6c8c2aedd340c7ed605b422fc95
font_01_sfnt_off0004178f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4178F 16148 bytes
SHA-256: 4807f1588612d30e4f7cf54a3a3d6d9f05b77148a2c7d8b35a510f6bf5f24d54
font_02_sfnt_off000420de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x420DE 13800 bytes
SHA-256: e804396e51907cb5228d338a229ee854a9f28a5985304e3b842e8bafc1b1539c
font_03_sfnt_off000436ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x436EE 17796 bytes
SHA-256: 9a3f45c96a7d947cb17ee85f09a3be91f43113908186aed8683a027792d9b948
font_04_sfnt_off00045f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45F07 221900 bytes
SHA-256: 63a389b92a0afb112fe9670fcc0eb99aeef070253ea2a7d65e1e9c524fc27568
font_05_sfnt_off0004736f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4736F 51960 bytes
SHA-256: 62dea1b4a58003ce2f657e45d7bed0e0603b9d70c3ce6281d854f3b71d9f7d7c
font_06_sfnt_off00054fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FE7 50400 bytes
SHA-256: 3933f0a171d2e1d52238afd1697f635a25c78debe3762eae68e9de3aebda16b8

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