Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab1bde4fc370421…

MALICIOUS

PDF

51.4 KB Created: 2020-09-01 00:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cae8d3abf106b9a9b2255153de5271a6 SHA-1: 401d9b801599ed47f5ebafb55d4cae41cca111e2 SHA-256: 6ab1bde4fc3704216ae436c2e367bc30c67535f02ddd356c95cf0175f38b2b25
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain text related to a "white hoodie template psd" and a URL that mirrors this search query, suggesting a phishing or scam lure. The presence of multiple PDF links, many pointing to Shopify, indicates a potential link farm strategy. No scripts were extracted from this sample.

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=white+hoodie+template+psd
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/nezemafodofozovonugek.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/apa_style_reference_online.pdf
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/6557431791.pdf
    • https://cdn.shopify.com/s/files/1/0432/9259/0236/files/after_earth_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/madukaziludima.pdf
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/81896578294.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/case_studies_in_abnormal_psychology_comer.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/fefoxukusufij.pdf
    • https://cdn.shopify.com/s/files/1/0433/1143/1838/files/guided_reading_resources.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/kojigo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4973/0727/files/nizajepekexejarijaso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/vekuranupigozer.pdf
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/brisbane_city_council_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/6971/0242/files/74772984752.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_off00007f86.bin
c76fc801b335d560fbde89bee3180eba6585c034d798b5a1169e063420bea844		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F86 4800 bytes
font_01_sfnt_off00008fe2.bin
510c01f8e88bc2ab5a90e81da237df2b8cfc02a4616f0c0b333f0e69ec2b7559		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE2 10308 bytes
font_02_sfnt_off0000b253.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB253 4324 bytes

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