Malicious PDF — malware analysis report

Static analysis result for SHA-256 7019ae2e7be420b2…

MALICIOUS

PDF

50.1 KB Created: 2020-08-09 07:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04374ee7352d410fd3c377909c4a1dab SHA-1: 8a39855d8449a130ecf93b71909c62fc69c19cfd SHA-256: 7019ae2e7be420b2be7d5b8b253b497725b2a8f03e575b46cb86c49d2673c375
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bhubaneswar+city+road+map+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious links under the guise of a city map. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's designed to redirect users to harmful sites.

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.ru/pify?keyword=bhubaneswar+city+road+map+pdf
    • http://files.malfinisproductions.com/uploads/1/3/2/6/132681725/1144349.pdf
    • http://files.stockporttherapy.com/uploads/1/3/2/6/132695244/e8d515d599fc0.pdf
    • http://files.olenkaschoolofmusic.com/uploads/1/3/0/8/130814758/8408966.pdf
    • http://files.romanhoering.com/uploads/1/3/1/4/131437648/69ef1bf27211dd.pdf
    • http://files.muscogeerea.com/uploads/1/3/1/6/131606392/4063158.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/64066981316.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/4675664152.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7550/files/autodesk_revit_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/dawidowosisafo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/91420246400.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/minejosojafokumov.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/xuguxugafukoponapejil.pdf
    • https://cdn.shopify.com/s/files/1/0436/3229/6089/files/9256039065.pdf
    • https://cdn.shopify.com/s/files/1/0438/9086/8379/files/87911416629.pdf
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/nebosabuwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/representation_theory_of_finite_groups_serre.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/finodoreguxajujakitofi.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/aleister_crowley_book_of_law.pdf
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/93786051633.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_off00007acb.bin
a45963ae835c84fa57ff985ce353486bd4f34df2c6407ff5672a9bdbc6b79730		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACB 5748 bytes
font_01_sfnt_off00008e49.bin
db38af934f713903ec321daeac1e1f426fbce7f615e020463e511292792d369b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E49 14204 bytes

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