Malicious PDF — malware analysis report

Static analysis result for SHA-256 77c62d7acf458351…

MALICIOUS

PDF

56.0 KB Created: 2020-08-11 01:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af4435c62242c972e0e0c69c91d8ce84 SHA-1: 2bb6793d14a730d7d9964de3acf348b7be003ab1 SHA-256: 77c62d7acf45835137fffefdd89b2da22f876e54d80641392671767cc6614366
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. The primary redirector URL is identified as malicious. The document body and embedded links suggest a phishing attempt to trick users into downloading further malicious content.

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=technological+innovation+in+education+pdf In PDF document text
    • http://files.cads-tt.com/uploads/1/3/0/9/130969965/2f712.pdfIn PDF document text
    • http://files.charlotteponyclub.com/uploads/1/3/1/0/131069897/paxumaputane_biwexukuduri_zukajapa_xoxuwekitev.pdfIn PDF document text
    • http://files.tskjrphotos.com/uploads/1/3/2/6/132682063/gipezawasisabiwonike.pdfIn PDF document text
    • http://files.rwsstem.com/uploads/1/3/0/7/130739288/fetefaf-sanozosi-gopuziwipamixaf.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/1/0428/6165/8279/files/78543373029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/halle_barry_in_monster_ball.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8998/4678/files/definition_of_balanced_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/kogoxujurevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6899/7284/files/27270526533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/29182774469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/mowimurixazokola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/81044835311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8139/1514/files/tajebawejujozuzalaxuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6720/9883/files/proyecto_arpanet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5246/6325/files/zuravi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/89564810855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/31339333840.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_off00008f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F50 5036 bytes
SHA-256: ea6592bdcdd98f9dbec814c603a5b706d542a3adc3be61c621e3e7a6243bce8f
font_01_sfnt_off0000a071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA071 10544 bytes
SHA-256: 3f01274a10b3fa90a60c840567e899e97a140272f6e4dc91a93827424413778e
font_02_sfnt_off0000c47c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC47C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2