Malicious PDF — malware analysis report

Static analysis result for SHA-256 00fa01993ce3f215…

MALICIOUS

PDF

68.9 KB Created: 2021-05-29 01:24:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49581c9510a9eb3f8afed4639ef99e50 SHA-1: 6c89db7af4c9752a5b08c727c9c9098973afc219 SHA-256: 00fa01993ce3f215ec3f76e26d0bae2caaa015a9155e9382705f1e1e4f73532d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF that uses a 'junior accountant cv sample' lure, as indicated by the document body and heuristic firings. It contains multiple links to external PDFs hosted on compromised websites, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/792e75df92afcca12ec9aabc451443d0/netozixowa.pdf
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/23946d08f08ddb8b36c83865443678d7/44581549932.pdf
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/f908dadee4dd609351c7b860e30fb0f2/sedenukufu.pdf
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9d6197b89---29703700993.pdf
    • https://ludifrance.fr/userfiles/file/supokerigikilulujavakum.pdf
    • https://stratasphere.online/userfiles/file/zorumazuzi.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160707b3b28767---33159504903.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/5136459852159dc72e9accff4511f832/70787966126.pdf
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7ee90a373---42622334022.pdf
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/beccd96cf8f8ddedae42a06e2734679f/tigijitoxamuwubikanezuzis.pdf
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/k31289be0opl412jeotjhb4rdr/1293316946.pdf
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/01fa84c503726d9964cd82ca81341a66/gesuzisojekalugir.pdf
    • http://ahxxzx.com/userfiles/202105/file/simazosomosukonapofe.pdf
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861ee7dd208---27968430402.pdf
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/3a6fc3eb488a6dc62a70881675027833/75388703240.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=junior+accountant+cv+sample+pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7a0.bin
0ea155d45fab63f614f872e27eeed125888223be4ea9f9ffeed1764b91502cac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A0 5352 bytes
font_01_sfnt_off0000e9c3.bin
40ddad3aa629df5cea2869a99ef29781587095a575572a1e15c89ea26908884c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C3 10648 bytes

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