Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f911a6e4328437…

MALICIOUS

PDF

37.8 KB Created: 2020-08-19 15:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f62ee13c21cce8e55806aae2f7f6c92a SHA-1: e4707f60fc975054e85bfadcabfbade0efe8609c SHA-256: 54f911a6e4328437f8d20a9f3dc65026d4c45cb25d11d58d0a93e5939e66fd32
152 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 a link farm of numerous PDF files hosted on Shopify. One of these links, found in the document body, redirects to a known malicious domain (ttraff.com), indicating a phishing or redirection attempt. The presence of a link farm suggests an effort to distribute malicious content or manipulate search engine results.

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=choice+tv+guide+thursday
    • http://garopij.rickyfrank.com/uploads/1/3/1/4/131438282/vemuw.pdf
    • http://tijovola.theachoostics.com/uploads/1/3/2/8/132814975/9399705.pdf
    • http://files.polos.org/uploads/1/3/1/3/131380343/6402488.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5377/files/microseconds_to_nanoseconds.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/87482542279.pdf
    • https://cdn.shopify.com/s/files/1/0436/0932/5730/files/bloodline_song_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0433/3908/8027/files/puxajulefinevudu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/puwexolapefisi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4346/1032/files/arjun_reddy_movie_bgm_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/fortune_1_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0428/2243/4972/files/nidavepowetegalim.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/makalah_sejarah_agama_hindu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/kisulisorigi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6145/1681/files/xenibebekibamox.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_off000059ef.bin
8c13538dac8a10a05ba4dbdab35a86a7d1fd17162c22f75d1ea491e61138520e
pdf-font-stream PDF embedded font (sfnt) at offset 0x59EF 5236 bytes
font_01_sfnt_off00006bc4.bin
606fd43f12449e857e64e0d610ebc32364861df438ca30f36b976f8ff4949a4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC4 9168 bytes