Malicious PDF — malware analysis report

Static analysis result for SHA-256 1420ce32a154a547…

MALICIOUS

PDF

47.1 KB Created: 2020-08-12 03:39:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c88e7b2a77af045560c13bc967fa6ea SHA-1: 0d6309fe7d9ab5fb2ff464f214a62ee55edb8935 SHA-256: 1420ce32a154a5476156f55907162382b4f30d5d3088ece9daee9232c56e2361
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=global+autonomous+driving+market+outlook+2020+pdf'. The document body, though heavily obfuscated, appears to contain this URL, suggesting a phishing or scam attempt. The presence of many external PDF links further indicates a link farm strategy, likely to improve search engine ranking or 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=global+autonomous+driving+market+outlook+2020+pdf
    • http://files.superiorwayoflife.com/uploads/1/3/0/9/130969179/lutawiluf.pdf
    • http://files.sallyjcurtis.co.uk/uploads/1/3/2/8/132816066/3790766.pdf
    • http://files.jacksonandthepoolsharks.com/uploads/1/3/1/3/131398221/wesixukin.pdf
    • http://files.randolphwalters.com/uploads/1/3/2/3/132303245/pirujoku-bulalalen-naposolaluta-rumajodegi.pdf
    • http://files.wowvt.com/uploads/1/3/0/7/130775934/6839bb22d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/todasalevuxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0014/3777/files/76406126722.pdf
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/77522547817.pdf
    • https://cdn.shopify.com/s/files/1/0429/5580/0739/files/lojupipesojomowegixonejap.pdf
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/65028690125.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/97180758612.pdf
    • https://cdn.shopify.com/s/files/1/0439/3467/9208/files/flat_belly_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0119/files/trane_xl14i_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/88335260393.pdf
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/sinimada.pdf
    • https://cdn.shopify.com/s/files/1/0433/3702/3656/files/silabus_biologi_sma_ktsp.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_off0000757e.bin
fb991c4bf3ca59297be9fe52ff29521c19e0cfad266005242542c9dac50fba4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x757E 5932 bytes
font_01_sfnt_off000089a3.bin
99a3d783c19630d652c94aa9e5b17e4e1abb49aba68bdf98ea63cb129c1aa101		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89A3 10868 bytes

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