Malicious PDF — malware analysis report

Static analysis result for SHA-256 e943ba1bb4aeb551…

MALICIOUS

PDF

45.9 KB Created: 2020-08-04 20:27:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebb571bac869754ac2f97833d9d0f7ed SHA-1: aefcc278f15f2a81ba794132b7ab40c4b0965a3d SHA-256: e943ba1bb4aeb5518bb852912b2781f5d3f4ff12781e8aa5c9b61a7c3dd4a7c8
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to '197 bus schedule nj transit pdf' and a URL that appears to be part of a link farm designed to attract search engine traffic. The primary malicious link is https://ttraff.cc/pify?keyword=197+bus+schedule+nj+transit+pdf, which is likely used to redirect users to further 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.cc/pify?keyword=197+bus+schedule+nj+transit+pdf
    • http://files.nijidesserts.com/uploads/1/3/0/7/130775009/xozuwev-wilegofevuziro-vudadujomuti-newufuwesumamu.pdf
    • http://files.stadiumcrashers.com/uploads/1/3/1/6/131606758/902fac9.pdf
    • http://files.q8paaet.com/uploads/1/3/1/4/131412032/7454426.pdf
    • http://files.emi-ceramics.com/uploads/1/3/1/8/131857213/4461338.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/bileroxezo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4792/5413/files/amharic_to_english_translation.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/32173316751.pdf
    • https://cdn.shopify.com/s/files/1/0428/7338/9223/files/13446071168.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0414/files/mumuzodolisebemukilewox.pdf
    • https://cdn.shopify.com/s/files/1/0432/3259/2040/files/womufogavej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdf
    • https://cdn.shopify.com/s/files/1/0432/3603/2680/files/51920727096.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/54677168950.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/morrowind_class_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1297/0903/files/whitney_cummings_height.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/2092490313.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/sifeb.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_off000074c6.bin
e3c8932ec52456e1f19193233fd92a78ba8ef330fd623b40aa493d77edbb4c91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C6 5652 bytes
font_01_sfnt_off00008807.bin
7e7f990bfa5dcfa5096cd3e0b927c341f86668a1de5eaae791ec80be52c9c5e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8807 10100 bytes

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