Malicious PDF — malware analysis report

Static analysis result for SHA-256 684f9952774cf736…

MALICIOUS

PDF

60.8 KB Created: 2020-08-07 23:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb30c4a7d1ca2f9f2df6e5f136858fdb SHA-1: bd9232af1883848e81389e7936be0282e6076e6b SHA-256: 684f9952774cf736f2950414aa806f83071fd3f812a6ed475a46c97d459e7bb8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to lure users. The primary redirector URL, https://ttraff.ru/pify?keyword=belajar+percakapan+bahasa+arab+sehari+hari+pdf, is flagged as malicious. This suggests the document's purpose is to direct users to potentially harmful content, likely phishing or malware. No scripts were extracted from this sample.

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.ru/pify?keyword=belajar+percakapan+bahasa+arab+sehari+hari+pdf In PDF document text
    • http://lomekawu.pamelacalore.com/uploads/1/3/0/7/130738870/sikinuferoredoj.pdfIn PDF document text
    • http://files.kelseyglynn.com/uploads/1/3/0/8/130874180/fbe8d13eddc1c8.pdfIn PDF document text
    • http://files.spaalamode.com/uploads/1/3/1/4/131410370/6344bf.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/1/0433/0687/7080/files/xidegafizupewutuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/90108618276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/tenasorosegonojerivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0406/6967/files/88335104299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/nipowirolusogapekirim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wanojexabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/zigevowexigitalobefan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4673/9878/files/tifurixejovumodiseramuged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6250/files/carbonyl_protecting_groups.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2661/1356/files/brother_utilities_scan_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/tipos_de_cadenas_alimentarias.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C0 5572 bytes
SHA-256: 1877595202c6ff0a9b7d209613599a8eba351a44d4ef472bf31cbdd3ac0a3ff2
font_01_sfnt_off000077a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A7 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off00008302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8302 1936 bytes
SHA-256: 7420db9ec41012b263dff8e0d039d2a895961a6b4c1647eabbcd20f441fad98a
font_03_sfnt_off00008c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C49 12616 bytes
SHA-256: e6f18127ffae68b16d1e5bf9a20170c58a51f8e12241761a6271a62d2a51b1a2
font_04_sfnt_off0000b3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3ED 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_05_sfnt_off0000c93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93E 8268 bytes
SHA-256: aa8e11b0aa14ce890073b9ce813dcc2526d276c6391f2d56068fc7e2acdda1dd

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