Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d9dd90740d8503d…

MALICIOUS

PDF

48.7 KB Created: 2020-08-07 06:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb215e662e5c92356df14819b1865aa1 SHA-1: 5e5fe60ae9f5481e97e58c9b3680c4526664afab SHA-256: 7d9dd90740d8503db746729b13624ea7c7c3db7922cd2ff3bbc4a86c1e76b8c6
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=aukey+dr02+manual+pdf'. This URL is presented within the document body, disguised as a link to a manual. The presence of a link farm heuristic further suggests an attempt to manipulate search engine results or distribute malicious content. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=aukey+dr02+manual+pdf
    • http://files.lesliemartinart.com/uploads/1/3/1/0/131071289/12257.pdf
    • http://giveda.strictlybraids.com/uploads/1/3/1/4/131437423/lojimareka.pdf
    • http://files.ricotroostphotography.com/uploads/1/3/0/9/130969820/bitobideza-mofigoxafijake-tezojopuboluxub-sazazowozeforo.pdf
    • http://giveda.strictlybraids.com/uploads/1/3/1/4/13
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/gaxopelofalewunufufuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/2237/7375/files/sage_50_accounting_2020_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/convert_to_svg_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/bobcat_753_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/unstoppable_high_kick.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/panotofopibemuzaduxipu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdf
    • https://cdn.shopify.com/s/files/1/0428/9848/9503/files/monster_manual_2_1st_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/11009677302.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/patefujikoduvulubar.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/96588095994.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_off0000765c.bin
0a23223082d0cbb2ff4e6fcc43c5e7135cb6e41abc7bd0d73827d0c4d3385ba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765C 5436 bytes
font_01_sfnt_off000088d3.bin
7870f5cae8f8dec6717d182de654ff18295b4068efee7ae2766063b23487df1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D3 14292 bytes

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