Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c40f0bf64dce7c6…

MALICIOUS

PDF

48.9 KB Created: 2020-08-21 12:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3da107827ead2618beb98c6c2b264454 SHA-1: b4ffd996bc7dc08582be2f30c696b7dc3f870d2d SHA-256: 7c40f0bf64dce7c6bb497f15c68458d2929ba0b3433a28f941f5a11cc9436915
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body and heuristics indicate a lure using a 'joining report letter template' to drive users to the malicious URL. While no scripts were explicitly extracted, the PDF structure and link farm suggest an attempt to host malicious content or redirect users to phishing sites.

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.com/pify?keyword=joining+report+letter+template In PDF document text
    • http://wobufal.amommachoosingjoy.com/uploads/1/3/1/4/131406071/narag_mijixug_jifabiwaza.pdfIn PDF document text
    • http://files.jasmafusioncuisine.com/uploads/1/3/1/3/131381722/9254902.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/1/0456/9946/5372/files/good_morning_photo_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/fugoposozeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/taruresorev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/25680113456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/25929821284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3967/7855/files/cnis_cadastro_nacional_de_informaes_sociais_dataprev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/9955766644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/easier_english_basic_synonyms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/neretidesalefadim.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off0000730f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730F 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off000083f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F4 4952 bytes
SHA-256: 0942303f91cafd3b0d736fce90b87d8de6a1dc62e92534d107217aea27d093c7
font_02_sfnt_off000094b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B2 10224 bytes
SHA-256: 5150148f1d8023022006c26295b88081ed477837fe882900eebdd979a1129dff

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