Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf26c409f28d665…

MALICIOUS

PDF

49.9 KB Created: 2020-08-31 16:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8080221ec33ad1b976ff98d16049a93 SHA-1: a55b4cbd225bdd5999a9d816c4ad7d76bce23978 SHA-256: 3cf26c409f28d665497e0f2325534b676f800fa443a71b986155babb1559a668
148 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to host malicious content. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body text, though partially corrupted, contains keywords related to 'visa application form' and 'invoice', aligning with lures for phishing or scam campaigns. No scripts were extracted from this sample.

Heuristics 5

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=us+barbados+embassy+visa+application+form
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/starwars_clone_wars_season_6_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/2588231910.pdf
    • https://static.usrfiles.com/ugd/fbccce_36fd35a91f9b4c9c843c1b292e584976.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fc9513cd8a3429c960734aaf5d32b0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_acf1f58ff19440b29d742b84ceaad3bc.pdf
    • https://static.usrfiles.com/ugd/735424_d451e41cbadd4e16880262047e7f113c.pdf
    • https://cdn.shopify.com/s/files/1/0429/3869/5846/files/netflix_m7111-_5059.pdf
    • https://cdn.shopify.com/s/files/1/0437/5845/2897/files/sadifatogeto.pdf
    • https://cdn.shopify.com/s/files/1/0430/8313/7178/files/19919522322.pdf
    • https://cdn.shopify.com/s/files/1/0433/3040/4502/files/sibovejonugover.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3453/files/short_bedtime_stories_for_toddlers.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7621/files/pflanzen_bestimmen_blattform.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/gisasokupelo.pdf
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/africa_day_history.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/96190415099.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071d0.bin
acd613838d59c8acc715de7830cce75fe04964100b585a562dab995e4c2999d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D0 5384 bytes
font_01_sfnt_off0000840a.bin
9ccadbf8aa0491fb2ff0afb256714383157f295b67b09778581d5c29292b69bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x840A 12432 bytes
font_02_sfnt_off0000ac63.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC63 4324 bytes

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