Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ae938df1f3b5e0…

MALICIOUS

PDF

80.9 KB Created: 2020-12-25 23:08:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cd75b945d7a9ea0ee993062834635dce SHA-1: e5857f470a9985bee0b013e5eba11be8cee6f18a SHA-256: 27ae938df1f3b5e0e46cfd2de11d03349316afced9eb712eac5518114b5ef57c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://trafficel.ru/aws?utm_term=aarakshan+movie+song+ming', is embedded and likely serves as a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery via the linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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.
  • 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://trafficel.ru/aws?utm_term=aarakshan+movie+song+ming PDF link annotation
    • https://zetizisoxaw.weebly.com/uploads/1/3/4/4/134498522/183a43141625.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/ggggijz/delivery_from_the_pain_no_ads_free_download.pdfIn PDF document text
    • https://wekexodaxax.weebly.com/uploads/1/3/4/7/134713384/temukaxowa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/direct_asia_reporting_center.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/94051314465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48298a8d-43cd-4765-96a9-97a4f1271498/64_ounces_to_liters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3443b13-9a70-4d7e-83a1-ea47e5a416ff/x2_aspen_dighton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97200215-76ff-4051-ac66-0a96add3c166/miami_erie_canal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/926ed688-ab7a-44e1-a90c-91768c6836ba/fagivabanafejaniridozafus.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF253 4888 bytes
SHA-256: df65c9c767da587feee2556b0a64704f528434d8690fc62b561c5a64bd17e04c
font_01_sfnt_off000102b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B9 11264 bytes
SHA-256: d6a261ab6cd1e234ddb3247a2acd24b16739b03c19ce569cf1c3978855db5a35
font_02_sfnt_off000128f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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