Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc3cfb9c50ecb13…

MALICIOUS

PDF

48.0 KB Created: 2020-08-19 06:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cce5c2916bd32c69c9996dbe21620044 SHA-1: 2a0de0a32054291ee218d218caeaf0a9542b486d SHA-256: 3bc3cfb9c50ecb135950feb1197d8fddef5425a549f3c43153c462230a5abaa6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. Additionally, it contains a large number of embedded links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO abuse tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of malicious redirector links is sufficient to classify this as a malicious document.

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=kausani+tour+guide
    • http://wexeron.singplayaudiate.com/uploads/1/3/0/8/130873851/zitubinezipi-fovepolid.pdf
    • http://juserane.theconferenceofbirds.com/uploads/1/3/0/7/130775085/7b78412f5c381.pdf
    • http://files.emilynahrens.com/uploads/1/3/1/8/131871424/6f5aa828b87a68.pdf
    • http://files.synergymedicines.com/uploads/1/3/1/3/131379296/8786241.pdf
    • http://lanubaf.camstenacity.com/uploads/1/3/0/7/130739783/nefubot-sisonitik.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/bridal_bingo_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/josopatitubowesapine.pdf
    • https://cdn.shopify.com/s/files/1/0447/0875/7660/files/probability_theory_and_examples_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0435/0178/1158/files/mudamajizovu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/bobolebobo_video_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/14329504828.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/53454692010.pdf
    • https://cdn.shopify.com/s/files/1/0433/0956/4064/files/push_a_new_branch_to_github.pdf
    • https://cdn.shopify.com/s/files/1/0437/0684/3288/files/verelikivinapi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8876/3298/files/iot_building_arduino_based_projects_download.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_off000071c5.bin
01680b74b226071f71c7b876447ae2562c180f852a1aee0b1c9a9ef53fd48f47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71C5 4812 bytes
font_01_sfnt_off00008228.bin
9fe7f46a5196760408949fd62ba7e35c2051dcd21e736b02db4c8f6802c8eea1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8228 10336 bytes
font_02_sfnt_off0000a551.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA551 4324 bytes

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