Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5694214f57f5f4…

MALICIOUS

PDF

50.4 KB Created: 2020-08-27 17:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 44e8f452e5c306b3b9dc4bdb7c6e74f4 SHA-1: 637e61a253b93bca6877f85debb22095f75f8184 SHA-256: ff5694214f57f5f4e5ecb6a7792a41f30933de17d6bd650ee4ce6073dd76ceec
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'SE_MFA_LURE' indicates the document's content is designed to trick users into providing sensitive information, such as one-time codes or MFA approvals. The presence of a malicious redirector URL suggests the intent is to lead the user to a phishing page or a site that initiates a malware download. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://ttraff.ru/pify?keyword=evaluating+the+twelve+tables+of+earl In PDF document text
    • http://files.sassmm.org/uploads/1/3/0/7/130776168/kagisufemu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8276/0601/files/official_boyfriend_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9290/8963/files/54387850844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9576/files/24_hour_weekly_schedule_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9983/1966/files/la_villa_cesar_aira_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7249/5526/files/abelmoschus_moschatus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/calisthenics_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/vakojakadadufegig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3445/0840/files/facebook_py_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7778/6018/files/18080108975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/12362011351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0875/7657/files/31412945523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1563/files/85840035917.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 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88BC 5280 bytes
SHA-256: aa3bc6d7c79b77e4364e056f6ba51b3f6bed95ac0691b3f83598e18d24006302
font_01_sfnt_off00009abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ABD 9976 bytes
SHA-256: b4d1055cd287f6ed7e17e6166965541ab8ce0665433818eed3bb5874a121fc66

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