Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7185c47585f1179…

MALICIOUS

PDF

56.4 KB Created: 2020-08-08 11:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41e4daaffc9f83cd20eb85201a496fa4 SHA-1: 8641682e7b4b728b80bbbf512e87cc23b2fa1ab4 SHA-256: d7185c47585f1179b22def493124e4cb82219ab5785e343e1339e76ea5be4e89
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary link identified, 'https://ttraff.cc/pify?keyword=free+download+sociology+books+pdf+in+urdu', is a known malicious redirector. This suggests the document is designed to trick users into clicking malicious links under the guise of providing free downloads, likely leading to further malware or phishing attempts.

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=free+download+sociology+books+pdf+in+urdu In PDF document text
    • http://files.hawaiianryanmassage.com/uploads/1/3/0/7/130775921/jomereja.pdfIn PDF document text
    • http://files.jonathanedgingtonwriter.com/uploads/1/3/1/0/131070113/pujomilun_kepaf_wozukas.pdfIn PDF document text
    • http://vosiwe.stanleyhayes.com/uploads/1/3/1/4/131407995/1492491.pdfIn PDF document text
    • http://files.pcoservices.org/uploads/1/3/1/8/131871593/4257212.pdfIn PDF document text
    • http://vusaxami.greenedge-lawncare.com/uploads/1/3/1/6/131637136/tufufopufu-taxibopanekag-ritusosuz-vuposimad.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/1/0431/0718/8898/files/niwuxodimolofubodokolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/kejerew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/doing_ethnographic_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9137/7828/files/60980296254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/54379840853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4096/3750/files/jupegavalig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3917/5335/files/math_worksheets_for_grade_6_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3762/1404/files/72348252788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/tafunejinanororelujifised.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/12805130120.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C3 5676 bytes
SHA-256: 5b8967d8a221cbc0c2bf8c554b3e122b1dd32cefaab0e86fec53c8d079451ffb
font_01_sfnt_off00007538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7538 2596 bytes
SHA-256: c48609903b587e41a36e63d46800c3489cd62dd687bde0fd9a0ca60fd6b3ddb4
font_02_sfnt_off000080ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80BA 2320 bytes
SHA-256: 7bb91423d63eb6bd7c2657278979848d60b7d38679106ec23dbd755ba6ab3d32
font_03_sfnt_off00008b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B09 9888 bytes
SHA-256: d8e9eb6fd731a36cb374ae624ce8da3a784048b379b0876d0d4dff58eade446b
font_04_sfnt_off0000ad13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD13 22380 bytes
SHA-256: c81a20f9e816f7809a1e7c30b99f89640980126cb0774a73000277f6ff5a84b4