Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6499e533a78fc52…

MALICIOUS

PDF

52.1 KB Created: 2020-08-20 04:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 325eb59dc111c36e58d301921b5ffc9d SHA-1: f60b10c1f766a8ec50be206d44497c8a28dd539f SHA-256: e6499e533a78fc5248f1601e445e6a009f51f94feb226be4bf9da9d232d682ae
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a consumer reports article. The document also contains a large number of links to PDFs hosted on Shopify, likely part of an SEO link farm to improve the redirector's ranking. No scripts were extracted from this sample, but the presence of the malicious redirector and the link farm strongly indicate a phishing or scam attempt.

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=consumer+reports+power+washers+2017
    • http://poxuku.fortsanluisdar.org/uploads/1/3/1/3/131398091/ginenifudat-naxonumuvol-gesagof.pdf
    • http://juruxi.lithoscounselingandconsulting.com/uploads/1/3/0/7/130776031/xeduk.pdf
    • http://gaxow.yvettefrancino.com/uploads/1/3/2/7/132741334/345de4a8.pdf
    • http://files.monsterhub.org/uploads/1/3/1/6/131606533/2897904.pdf
    • https://cdn.shopify.com/s/files/1/0434/4358/5191/files/axton_borderlands_2_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/breakthrough_thinking_thomas_vogel.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7675/files/89527850680.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/kawaba.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/6627019694.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3802/files/after_effects_expressions_marcus_geduld_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/31383030720.pdf
    • https://cdn.shopify.com/s/files/1/0434/5643/0230/files/talepujupawelifizewano.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/ncert_class_12_maths_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0429/2683/3823/files/87142805476.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d39.bin
8fdbbd1bce584d66fc8e51f393be9d93639813914087e1bab3650e2c01b1bfef
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D39 5432 bytes
font_01_sfnt_off00009f93.bin
363cc455a9dc00f42a8429eeb36fc2fb91bdeaee5d7f4093b57261b3f6bf7b8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F93 10460 bytes