Malicious PDF — malware analysis report

Static analysis result for SHA-256 836f04a85b251963…

MALICIOUS

PDF

35.9 KB Created: 2020-08-12 10:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77045ff58ae49753485d203cb93a27fe SHA-1: 30717a0ce99069c8e2973de01cedeedc44077293 SHA-256: 836f04a85b2519633c61112b5be56912788b258345bb84fcd5321ff5ed39d3bc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs and text that masquerade as a 'Submission drawing of residential building pdf'. One of the primary URLs, 'https://ttraff.com/pify?keyword=submission+drawing+of+residential+building+pdf', is flagged as a malicious redirector. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of malicious redirectors and the deceptive document content strongly indicate a phishing or redirection attack.

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.com/pify?keyword=submission+drawing+of+residential+building+pdf
    • http://luvalil.tottieaarvold.com/uploads/1/3/1/0/131070805/buwej_zudufiva.pdf
    • http://files.varsitygoods.com/uploads/1/3/1/3/131380849/xatotagulome-wibebutuj.pdf
    • http://wenone.freedomachine.com/uploads/1/3/1/3/131383444/b30929.pdf
    • http://novuxi.monicaleeux.com/uploads/1/3/1/1/131164250/2409198.pdf
    • http://files.jjwhitememorial.org/uploads/1/3/1/8/131871970/863fcf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8121/1810/files/leled.pdf
    • https://cdn.shopify.com/s/files/1/0428/5235/2156/files/39991094230.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/bitmap_image_converter_to.pdf
    • https://cdn.shopify.com/s/files/1/0437/5887/8872/files/46113102510.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1032/files/tiburotirax.pdf
    • https://cdn.shopify.com/s/files/1/0431/8507/8423/files/password_protect_adobe_reader_xi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/bcs_preliminary_question_bank.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/beauty_and_the_beast_2020_movie_script.pdf
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/87161775791.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/cover_letter_sample_for_job_application_in_word_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/mexasusejikavukewebepu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38655606666.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e8c.bin
91e8b4a9e5aac6a6724905d19b11f4fe5c98b04d5d7464d66a1268d581d50981		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E8C 5696 bytes
font_01_sfnt_off000061da.bin
cc982d902572cc775b2b5c11784fcbe984e16e06a5ed40142556f05a7978f864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DA 9572 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.