Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e1768e19a0f053…

MALICIOUS

PDF

46.1 KB Created: 2020-07-31 21:24:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33ffca1fd34543bbdbd8d852615b2b8c SHA-1: 11392c3d01d70545aec617cd2191cb33f3478e6a SHA-256: 89e1768e19a0f05353039fe745bccef6ea046c0c9ec22ff61fb38e18d5042ac4
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=pivot+animator+download'. This URL is likely part of a phishing or scam campaign, attempting to trick users into downloading malware or visiting malicious sites by masquerading as a legitimate software download. The document body also contains the same lure text, reinforcing the phishing attempt. The presence of numerous other PDF links further suggests a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=pivot+animator+download
    • http://files.mtrainiermonsterz.com/uploads/1/3/0/9/130969522/filesonekadijit_jenopojoz_sazujoso_miforabimawivat.pdf
    • http://files.sass-and-crafts.com/uploads/1/3/0/8/130815213/puwakujojavulazamad.pdf
    • http://files.christopherluscombe.com/uploads/1/3/0/9/130969775/zupakatox_berudetivuxar_keteporaxuvupin_jivagub.pdf
    • http://files.lucysestatesales.com/uploads/1/3/0/7/130739826/3d70b.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0101/files/zorurivukobunuforisatig.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/topimagivujogomadod.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/bupigunetewalenuruxexaje.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/64147817974.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/kujij.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/96106890572.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/58741690678.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/ximosalusafivip.pdf
    • https://cdn.shopify.com/s/files/1/0436/6581/7753/files/lularazemexodafogafo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5908/files/viwif.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005854.bin
935b7a244d67eff25e95515eb7a6a2b2339141c0f589de4652e2fbbecdfc3b91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5854 6752 bytes
font_01_sfnt_off00006e8e.bin
adedae1b2fc7f521d90ffe633f01d0ec6e2ade52ffb1829b39a7873eddab0a32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8E 4944 bytes
font_02_sfnt_off00007f5e.bin
d1cb0b3d1f7896e27a29d7ed93db499cb3bbdf0591b4799b46f3826a9f2c6b71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5E 14080 bytes

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