Malicious PDF — malware analysis report

Static analysis result for SHA-256 81f4e3f8abef9067…

MALICIOUS

PDF

39.9 KB Created: 2020-08-21 12:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d07d2e5d8640df7303853a931bda2a6 SHA-1: 2313da0de4c60ea71677cd6de845c516cff63798 SHA-256: 81f4e3f8abef90671c5307d211caf7eabf3171e812a1692f74b30aad7851b2b3
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to appear as legitimate documents, but they redirect to a malicious URL. The primary lure is disguised as a 'weather report today mardan', which is a common tactic for phishing or malware distribution. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL confirms the intent to lead the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.cc/pify?keyword=weather+report+today+mardan In PDF document text
    • http://files.lazyacrescampground.net/uploads/1/3/0/7/130775195/7284154.pdfIn PDF document text
    • http://kiter.acpamint.com/uploads/1/3/0/7/130739220/7830316.pdfIn PDF document text
    • http://files.wseast1984.com/uploads/1/3/0/9/130969334/28052.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://cdn.shopify.com/s/files/1/0430/8205/5842/files/bobakirinonoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4376/3862/files/assignment_of_contract_california_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4423/files/wisadusuguwudimosopeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/minecraft_command_block_id.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0937/5397/files/important_national_and_international_days_and_dates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/1219908908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5261/files/baahubali_movie_full_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/famunilojudasimimodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/tamil_audio_song_free_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3667/files/elements_of_photogrammetry_with_application_in_gis_fourth_edition.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 4

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_off000051c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51C3 4844 bytes
SHA-256: 49aca2e0511c18f747002fb1bad28f1f840cc6977915ac0c7ae4350bb564270c
font_01_sfnt_off0000621b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621B 10104 bytes
SHA-256: 5192466a73ed5332c44a58ee7631c143d95ab03cc492a0ac4cddc1dc9c029d59
font_02_sfnt_off000084bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BB 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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