Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e97f0ff3deb7b6…

MALICIOUS

PDF

53.3 KB Created: 2020-08-26 05:32:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3226c0b9bc81ec4b27aafdd6c3805a78 SHA-1: 67f5cc6c96b3d1fd8e085f22b66cdb99d899b2dd SHA-256: 03e97f0ff3deb7b664526a2220225636a700eda71b28ce8eabf9aa92558eb0fc
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially obfuscated, contains text related to a 'New York magazine sweepstakes' and the malicious URL, suggesting a phishing or scam lure. The presence of many external PDF links indicates a link farm, likely for SEO manipulation or to host 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.ru/pify?keyword=new+york+magazine+sweepstakes
    • http://files.mrwhitchermath.com/uploads/1/3/0/7/130776589/virip-gotur.pdf
    • http://files.motodec.com/uploads/1/3/2/7/132710726/eecf8e605628f.pdf
    • http://files.brothersgreenhouses.com/uploads/1/3/2/3/132302802/1579398.pdf
    • http://javunu.theharbordivide.com/uploads/1/3/2/7/132710575/efc92e54c794d5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/kadiluselomexike.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93336639176.pdf
    • https://cdn.shopify.com/s/files/1/0448/4271/3249/files/megonavinalozutibilugekum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutim.pdf
    • https://cdn.shopify.com/s/files/1/0438/0868/6237/files/filipino_adolescent_anxiety_scale.pdf
    • https://cdn.shopify.com/s/files/1/0451/7802/8183/files/95918441211.pdf
    • https://cdn.shopify.com/s/files/1/0433/0681/1560/files/map_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85484739365.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/96750967279.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/mivigesumupitojupuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2261/files/kobanenel.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5351/files/bedding_roll_for_guide_camp.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000842d.bin
2f7cbf55e86db550254834b5c796fd424712408c64497d941c1a9f7b5096eaf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842D 5172 bytes
font_01_sfnt_off000095cd.bin
4b060ed2224bd6520d1f8a0cc3357d4a27fa37fd7d7368abc02fea9cf9217a8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95CD 10588 bytes
font_02_sfnt_off0000b9d6.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D6 4324 bytes

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