Malicious PDF — malware analysis report

Static analysis result for SHA-256 c42367abf60bb9f0…

MALICIOUS

PDF

55.2 KB Created: 2020-08-15 06:55:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be1a540c7d151d6d79f0ca61a9e91edd SHA-1: 66bd1d811c3acf26039b9d24ce83eacf394e7065 SHA-256: c42367abf60bb9f0f01d44c3f9f058ef2c861659520cf4dd431bddfe8bfeab45
194 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector. The document body, though heavily corrupted, contains the text 'daily attendance register format in excel' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous PDF links and a malicious redirector indicates a phishing or scam attempt.

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=daily+attendance+register+format+in+excel In PDF document text
    • http://fazesi.teresaverney.co.uk/uploads/1/3/0/7/130776819/1620404.pdfIn PDF document text
    • http://files.blackhillsponderosaplace.com/uploads/1/3/1/4/131437873/d9c090fc.pdfIn PDF document text
    • http://tebofoj.wilsonlee168.com/uploads/1/3/1/4/131437812/salufajekuzoz_sokukofoda.pdfIn PDF document text
    • http://kuvufixo.hanskombucha.com/uploads/1/3/1/3/131398140/1123748.pdfIn PDF document text
    • http://files.thrivingdrs.com/uploads/1/3/1/3/131380107/4891281.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/1/0433/6674/4216/files/dewukamizevupeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/37275436949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61238086127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/92027003851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1651/files/29577227063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/21848522869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/hotline_bling_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/74101746330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3110/1603/files/93423881917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4934/4421/files/sexasapibufuzovomuxuwuzij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5117/0457/files/91541849483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9949/files/ladasufisaxivifop.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB6 5508 bytes
SHA-256: 5149cf6e57ec037ef0f07bb837630aea7978a82d527bdb4ccc9056a144765193
font_01_sfnt_off00008f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5D 1596 bytes
SHA-256: c198a591ae584e5ce0ba4e9356ad643509fbd09026bb86d1b1e1e191a79662f1
font_02_sfnt_off0000977e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977E 9960 bytes
SHA-256: 0a2a46b862f2596b26699c13912099a98b88d751bdbac30916a30611d6510865
font_03_sfnt_off0000b9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C1 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b