Malicious PDF — malware analysis report

Static analysis result for SHA-256 8df232b6a1c4d4d6…

MALICIOUS

PDF

41.1 KB Created: 2020-08-21 19:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fdd27db0c98e2acd426d565e433e82e SHA-1: 60905eda9f1cbd0908978f31c5568edb000cf170 SHA-256: 8df232b6a1c4d4d60416fda6f8b4e83a91b2eb8b888272f9da81b0165d4d1bc5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=clear+cookies+chrome+android'. This URL is likely part of a phishing or scam campaign designed to trick users into visiting malicious sites. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning or to obscure the ultimate destination.

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=clear+cookies+chrome+android
    • http://vojimuti.coreenergycleansing.com/uploads/1/3/1/8/131856725/xezenajozuk.pdf
    • http://dubuden.brosforstevenash.com/uploads/1/3/2/3/132303245/gisusivune_suvosowozinis.pdf
    • http://files.bridgeportcf.org/uploads/1/3/1/3/131383619/lebevawifubu.pdf
    • http://xadiguvum.nikonmalta.com/uploads/1/3/1/3/131384240/dukirisoxodunuwo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/sowugimixadi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5279/9902/files/addams_family_piano_conductor_score.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/17828277991.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/65058274594.pdf
    • https://cdn.shopify.com/s/files/1/0433/6363/1272/files/84085431166.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8436/files/90716303345.pdf
    • https://cdn.shopify.com/s/files/1/0437/1569/0650/files/ofac_sanctioned_countries_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/wuwewepune.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/post_cardiac_arrest_management.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2813/files/cheats_pokemon_glazed_gba_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/69162751429.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50971407729.pdf
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/zozilalogubopalalim.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/51696191064.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_off000062f6.bin
7713f124db72135be765e44d8a760d332aca5b500bf54f7925f6cc52053e7d0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F6 5148 bytes
font_01_sfnt_off00007442.bin
13eab1cc9839426c52e308c0fc39d1356d71005380aa2ad22e1acbc48b721041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7442 10272 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.