Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac42b9c2bf08f1eb…

MALICIOUS

PDF

47.4 KB Created: 2020-08-27 18:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 712e4b97fbc821ba5b9f28cb85abc0e7 SHA-1: 54893935b5b4d9ecfdee0665fa0d8ef20382c9ef SHA-256: ac42b9c2bf08f1eb9e63879c5f70aa0f0fd600db43a90d109acb8d2a672f9627
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a calendar PDF. This indicates a phishing or malware delivery attempt. The document body and embedded links suggest a lure related to 'Kalnirnay 2019 marathi calendar pdf online'. The PDF also contains a link farm pointing to multiple Shopify-hosted PDFs, likely to improve search engine ranking and distribute the malicious link.

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=kalnirnay+2019+marathi+calendar+pdf+online In PDF document text
    • http://tefanubum.talamofood.net/uploads/1/3/1/4/131437089/66161.pdfIn PDF document text
    • http://files.bronxleadershipacademy.org/uploads/1/3/0/9/130969054/882463.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/folojekufufobadopawuwevat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/19925411067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1701/9292/files/31952581226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9441/6290/files/english_grammar_book_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/zoxefitabepekaxajawoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/1273069039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/48749812701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9698/0136/files/5966739091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/15734923378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1137/4230/files/fepuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9029/files/54358721864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0568/8483/files/5309702239.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_off000051df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51DF 5772 bytes
SHA-256: 0bdc5d32c17a7ab9f79057e8694c1f02302349fdb63c515e2c2b41205d05b03b
font_01_sfnt_off00006567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6567 10076 bytes
SHA-256: fdb60f59b576a43bb8c21d93a92b7504ef310cdd721b4a471a38e26206c607bf
font_02_sfnt_off0000880a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880A 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
font_03_sfnt_off00009d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D5F 5112 bytes
SHA-256: a0237da2ba6f7d0b862c21bbba5b6eb9f46d0a62d33dbf6d93c3da7886ced467