Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04e219ffc467893…

MALICIOUS

PDF

70.7 KB Created: 2020-12-21 13:47:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e62620fb1e401740cd442d2dde86bfe6 SHA-1: ba15d7eff3145a39960228d9d6cd6fea6fda5919 SHA-256: e04e219ffc467893cf3f8ebfbcfc4eaee6bfd98e9e38994ca58e9b15c4165a9c
264 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, including detections for malicious redirector links and a link farm. The document body, though heavily obfuscated, contains references to 'swepco longview tx address' and metadata indicating it was generated by wkhtmltopdf, suggesting a potential lure related to billing or account information. The presence of numerous external links, including a known malicious redirector, indicates an attempt to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • 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://gettraff.ru/strik?utm_term=swepco+longview+tx+address In PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/bigoton-pudonigix-gunimajoxelir-motezuwosaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368503/normal_5fa3ab3f34b56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486192/normal_5fc59eb985ffa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375086/normal_5f9b4850e54bc.pdfIn PDF document text
    • https://betutoza.weebly.com/uploads/1/3/4/8/134899773/kejara-levobigepi.pdfIn PDF document text
    • https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/6608990.pdfIn PDF document text
    • https://tafopolen.weebly.com/uploads/1/3/4/3/134396822/nuwevafenulepifipefo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_5f992d2f74b38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451930/normal_5fbb7571674f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://static1.squarespace.com/static/5fdd2afa6394b41d6424bc80/t/5fde571c15a11837d0a2c38d/1608406815210/adsorption_journal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd314aa-3b5f-4842-90d2-5a18d5acd68e/39700135533.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/armored_core_for_answer_intro.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55bc327a199023ad316a3/t/5fc6f6258f079636156d83a3/1606874662560/allosaurus_simulator_dinosaur_survival_battle_3d_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/cslp_2020_summer_reading_theme.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC19D 5564 bytes
SHA-256: 76aae98546e993bded231791fae190ac61cae6a46413fea9e0cecb7a32ad8246
font_01_sfnt_off0000d4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AF 7572 bytes
SHA-256: edba940dbfede7c242035758051b2db9ea39e77a5e6dfde32bd5b8e571a337dd
font_02_sfnt_off0000e997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE997 10364 bytes
SHA-256: a1d9643896fcc7754348269fcd4d3014d23f6f66a1f330825b3f7220cbe5cd4e