Malicious PDF — malware analysis report

Static analysis result for SHA-256 fecaed6f0dfb2f6c…

MALICIOUS

PDF

63.7 KB Created: 2020-11-13 15:27:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c8a14f8bb2889722dbd880ceb6b1e618 SHA-1: 7ccf41405c8b4187edde3e1772cc799813790863 SHA-256: fecaed6f0dfb2f6cd72a45e57082107fe469a1d9d0264f83a44ed644fecb8176
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded content, though heavily obfuscated, likely serves to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.
  • 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://trafffi.ru/123?utm_term=guardians+of+the+galaxy+movie+poster+27x40 PDF link annotation
    • https://lituveso.weebly.com/uploads/1/3/4/3/134362288/fozijiba-liribadiri-pabevuxes.pdfIn PDF document text
    • https://fugiweritukasuj.weebly.com/uploads/1/3/4/6/134682589/a865075b.pdfIn PDF document text
    • https://kitafawavan.weebly.com/uploads/1/3/4/7/134702073/nokofalirejatok-xudexut.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/a63fb.pdfIn PDF document text
    • https://kunimagim.weebly.com/uploads/1/3/4/6/134608209/tiroripazo-gofuzeparufiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374700/normal_5f94ae711f844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5f886954ae0c9.pdfIn PDF document text
    • https://xoforovujedopod.weebly.com/uploads/1/3/4/5/134587448/zalidodivige.pdfIn PDF document text
    • https://zuzolavilasobin.weebly.com/uploads/1/3/4/5/134523903/cc4c09.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/3138913.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/3872273.pdfIn PDF document text
    • https://joxetoxuluf.weebly.com/uploads/1/3/4/3/134391367/bixirulawi_vatuxulelisidox_pogoti_xapizudalanu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421199/normal_5faa1a4b6ac46.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://uploads.strikinglycdn.com/files/d25ece5d-46d1-4b59-ab72-6c0766996b5c/dajomubazefojujonab.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/fazabanajedosaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/696756fd-807b-45f9-8541-dba07816a345/behringer.com_x-touch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/3843659693.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_off0000adff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADFF 6040 bytes
SHA-256: 1c4706929a96f95610a3a19b5be2aa659d53caba66238f00a9a3c1ad94bfcab8
font_01_sfnt_off0000c280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC280 9716 bytes
SHA-256: fa17e5d463a6decc81cbba6d2a02be67496d627578b432caae450766e1417448
font_02_sfnt_off0000e3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A7 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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