Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c2e6d6a45a6692…

MALICIOUS

PDF

74.5 KB Created: 2021-03-06 05:00:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 562e3ef6ae7fbfd6bbca1b64429c7859 SHA-1: de814bc0ed7fae99977a84fdaa885f3213e6c858 SHA-256: c5c2e6d6a45a6692f7264b445eeea104b0b6e95875b28ac201195e9b66cad484
216 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics, including ML classification and ClamAV, and is specifically flagged for brand-impersonation credential phishing, impersonating PayPal. It contains numerous external links, suggesting a link farm or redirection mechanism to deliver the phishing lure. The embedded URLs and the nature of the heuristics strongly indicate a phishing attack targeting user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/5d96a8d38297990.pdf.
  • 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://crophysi.ru/123?utm_term=1985+honda+rebel+250+carburetor+rebuild+kit PDF link annotation
    • http://wafapolinan.iblogger.org/how_to_clean_philips_avent_3_in_1_steriliser.pdfIn PDF document text
    • http://mamafiposorugul.sportsontheweb.net/xurozivunuw.pdfIn PDF document text
    • https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/5d96a8d38297990.pdfIn PDF document text
    • https://belafawejogawol.weebly.com/uploads/1/3/4/5/134583754/vetepadamesavematud.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
    • http://xoxalufuropa.epizy.com/pajeman.pdfIn PDF document text
    • https://667abc8f-92ca-45d9-bc9d-789c80a68858.filesusr.com/ugd/dcd78f_e714d4af288c4db38159c796d73293c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/wibawurutu.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/benzodiazepine_withdrawal_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13146702-851c-42cd-ab4f-70c7a60852d0/xolirusof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cf400e2-0d37-4248-8957-31b509284700/noguzob.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/fikixokotitanigodukamodo.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/68985659333.pdfIn PDF document text
    • http://zafurug.epizy.com/totanoluzixadutetevizido.pdfIn PDF document text
    • https://4e4301d6-cc9a-4939-960a-6b497c1efea6.filesusr.com/ugd/d78803_3f790865a01c4b2491e026b517651ba6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/catia_v5_crack_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/82363386635.pdfIn PDF document text
    • http://voferinokubusob.rf.gd/arrival_guides_amsterdam.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

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_off0000d37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37E 5640 bytes
SHA-256: 6a3368feb790249d94ba7a49b5378cbe94d00cea6358e91b9ed38f5d40de29c2
font_01_sfnt_off0000e69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69A 11228 bytes
SHA-256: fa9f97eb6e800e807ea3a99693b0b553434c40a74e19959e25b12d81693ff283
font_02_sfnt_off00010cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDB 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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