Malicious PDF — malware analysis report

Static analysis result for SHA-256 001b322124928adf…

MALICIOUS

PDF

43.4 KB Created: 2020-08-09 21:07:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c823a70f9452cd7d4fdaec74e049d91f SHA-1: 564d0ec3b592e750761ebd9457335fb12b0be244 SHA-256: 001b322124928adf31919eaf21861e3541608c9bedc2bcf056876accaa75822f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=knowing+you+jesus+lyrics+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, hosting numerous links to other PDFs, many of which are hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The embedded document body text appears to be corrupted or obfuscated, but the presence of the URL within it further supports the malicious intent.

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=knowing+you+jesus+lyrics+pdf
    • http://files.wellreadfred.com/uploads/1/3/0/8/130874469/8f612569069c8.pdf
    • http://files.bengilbert10.com/uploads/1/3/2/7/132741029/guvajufeleb_fanuku_jobusenupo_xupugoforavo.pdf
    • http://files.wetanddrypodcast.com/uploads/1/3/1/8/131856271/f85994bbf.pdf
    • http://xupetix.lisaellisonart.com/uploads/1/3/0/8/130813765/e0acfea2454a286.pdf
    • http://files.katherinemgjones.com/uploads/1/3/2/7/132740285/muteviregeda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zukax.pdf
    • https://cdn.shopify.com/s/files/1/0434/3290/2806/files/14890758074.pdf
    • https://cdn.shopify.com/s/files/1/0437/8587/9704/files/define_internal_audit.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/vujawinuvuvuxifesiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/research_data_analysis_example.pdf
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/32543938720.pdf
    • https://cdn.shopify.com/s/files/1/0431/6571/2535/files/xogetesewatizoragu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/fuvumebulebomexidarabume.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/9._2._1_jailbreak_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/nanuwirilosakanizifenu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/fibamerexojaragodedokudom.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/social_impact_of_globalization.pdf
    • https://cdn.shopify.com/s/files/1/0449/9865/6158/files/mn_sales_tax_fact_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/0906/4607/files/english_literature_textbook_grade_11.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9164/files/tofamaliwipimiletixefidul.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_off00006a51.bin
25e3a758c24eb0879f1617a9b475f022f44f3898aea808493ebbcc0223cbaedf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A51 5352 bytes
font_01_sfnt_off00007cc6.bin
dc90c55b7bd29f1a2cc2090f7d200044127320c43a200eeb69736c7e442e19bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC6 10504 bytes

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