Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a5b4908f7fd6697…

MALICIOUS

PDF

42.9 KB Created: 2020-08-12 00:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13cd9974a6be296d62a5e611a1af0730 SHA-1: bf2688f59f39677b3736ba8daa5de4dbd930d375 SHA-256: 3a5b4908f7fd6697dbd58e30ea8243a25c7896f61efbb8124b359cc07e50d926
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'adverse drug reaction form' and includes the malicious URL. This suggests a phishing or scam attempt, likely to redirect the user to a malicious site. No scripts were extracted, limiting the analysis of further payload delivery or persistence mechanisms.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=adverse+drug+reaction+form+pdf
    • http://files.striperhunt.com/uploads/1/3/1/4/131453998/visarufuradugo.pdf
    • http://files.orlandobathrooms.net/uploads/1/3/0/7/130738969/8679518.pdf
    • http://gafajo.ellemaverickevents.com/uploads/1/3/1/3/131384169/2c478293.pdf
    • http://rerew.littlepieceofmyheart.com/uploads/1/3/1/0/131070374/0c7a11b28bb3f7e.pdf
    • https://cdn.shopify.com/s/files/1/0431/6545/0389/files/gitamabazelinaderufipe.pdf
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/sample_mba_recommendation_letter.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovetutokukike.pdf
    • https://cdn.shopify.com/s/files/1/0437/9885/5837/files/96116346436.pdf
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/the_art_book_big_ideas_simply_explained_vk.pdf
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/nanujekuviwuwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/83281237872.pdf
    • https://cdn.shopify.com/s/files/1/0428/5965/9420/files/20511930429.pdf
    • https://cdn.shopify.com/s/files/1/0433/5471/8358/files/apples_to_apples_game_cards.pdf
    • https://cdn.shopify.com/s/files/1/0430/6432/8345/files/ghazwa_e_khyber_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8537/files/national_geographic_learning_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/81224067748.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068d0.bin
61919cb91d2c0c24698c8fbdb27c5cfddb9dfc7b2f6b62328b668d9341f24c1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x68D0 5492 bytes
font_01_sfnt_off00007b6f.bin
9e44f24c0cfa78626f488a765cfdf3df11d236fbba40daa080fda7664c0d1877
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6F 10248 bytes