Malicious PDF — malware analysis report

Static analysis result for SHA-256 a14f155f097d07d3…

MALICIOUS

PDF

87.7 KB Created: 2020-12-15 13:49:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 22d0d965bc3964686b0fe0b02bca069b SHA-1: 9bea0f7d3fe9e793cca71e723a27436c16896723 SHA-256: a14f155f097d07d353e34686c64a35c14696236a012048840ba23fba594c9235
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample is a PDF file flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. It contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' pointing to a Weebly hosted PDF. The 'SE_CALLBACK_LURE' heuristic suggests the document's content is designed to trick users into calling a phone number, consistent with phishing or tech-support scams. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/123?utm_term=density+of+hexane+gas PDF link annotation
    • https://zokelafeg.weebly.com/uploads/1/3/4/8/134889419/tiriw-winetejapevidid-jikem.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/960e99cb-383b-46cd-ba94-3a1ab5b8087f/agario_bots_free_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed8c9b3-4268-4c69-b774-cd14d221ff51/95220452557.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e88ece28-1169-478f-bbb7-65ec4bec84f1/zojuf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc370cbcd1e280355e45738/t/5fcd9f48260a660a6bf6c360/1607311177503/fiji_airways_head_office_sydney.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34b99c7e-650e-4621-9dc7-91d7274c0869/69175738912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb6bec6b-7517-49fe-b9d8-09abd9058b0e/xejelaxadogufifoles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b787c3f4-dd2a-45a5-a311-c8ac4d9a0c13/gekopixemoxivab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7922501-fae5-48af-8960-7c3e7bac0652/dadamezagowukubutelenud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90f8029e-c2d6-4d30-afc0-417e85c25981/22231751572.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10c1368612547ed5ef44e/t/5fc560b09d79364840418056/1606770864843/97112710035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed6a5efc-9041-4035-808f-63d803fdfb97/patugev.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10433 6492 bytes
SHA-256: d2077f5d6d5b1d677d9b6d000eb087611a047961d42ceeb980acba3b54af8b85
font_01_sfnt_off00011468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11468 5068 bytes
SHA-256: e63b257445dff8955705bd35b5e23ef8a1a73814b574f795c2ed96638d5931ea
font_02_sfnt_off000125c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125C5 13532 bytes
SHA-256: 3a479c575f27dc8fe88b8f9e25a95875b0746b33d6cc60a7da503e5d6820d949

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