Malicious PDF — malware analysis report

Static analysis result for SHA-256 0144f8ca2bf6cbbf…

MALICIOUS

PDF

48.9 KB Created: 2020-08-12 05:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de906685b63707a916c1477a0d26aff1 SHA-1: e38d09dc675464c54c2505073eab360444c5b7b7 SHA-256: 0144f8ca2bf6cbbfcc4d851af6556376f21590a4bcb7cf77a8d25eda7ae6ab99
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's a primary lure. The presence of a large number of external PDF links, many pointing to Shopify-hosted files, indicates a potential link farm or SEO poisoning strategy 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.com/pify?keyword=cognitive+behavior+modification+an+integrative+approach+pdf
    • http://files.shore2shoretravel.com/uploads/1/3/1/3/131380292/dudoregal.pdf
    • http://files.supernovaacro.com/uploads/1/3/1/4/131406714/maximefodukude.pdf
    • http://files.kimballrentals.com/uploads/1/3/1/6/131606111/973547.pdf
    • http://files.neusroig.com/uploads/1/3/1/4/131454024/bolamizidagib-jezubokexitima-kesokeza.pdf
    • http://files.guerrillazoo.com/uploads/1/3/0/7/130739616/5761426.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/petatofitizivixuliso.pdf
    • https://cdn.shopify.com/s/files/1/0430/8434/9591/files/sequence_and_series_all_formula.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/47417063188.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/ansi_c_programming_language_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/advanced_metallic_materials.pdf
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/20346294411.pdf
    • https://cdn.shopify.com/s/files/1/0437/6287/6565/files/puxapoxowar.pdf
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/monitoring_of_harmful_algal_blooms.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/1471460269.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/bolaxoxumilelunogaxi.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_off00007fd3.bin
e8e67155e8a2b542f9a84883a584b0f60208c66a421bad9e5d01a378181f9245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD3 5464 bytes
font_01_sfnt_off0000924d.bin
02570905ba7bdb3e66767932a8a73b43091dc708fd83abe040ec96bf23beba24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x924D 10552 bytes

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