Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a90961422ad7bf9…

MALICIOUS

PDF

38.2 KB Created: 2020-08-22 15:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 942c2e08a814f06161e9d4148b80fc67 SHA-1: c08ce500bcee6b14568f59131ebd0c905d92d14c SHA-256: 9a90961422ad7bf97bf90bbbef64d4ce15f60e9df0b7f9feae6eac4b1d54bf7b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, however, redirects to a malicious URL via ttraff.cc. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

Heuristics 3

  • 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.
  • 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=reported+speech+interrogative+sentences+worksheets
    • http://files.goldenruleservices.org/uploads/1/3/1/6/131606755/43c117.pdf
    • http://nositiga.ac2design.com/uploads/1/3/1/0/131070872/56891367d44.pdf
    • http://pizesex.jenniferwyseart.com/uploads/1/3/0/7/130775309/vubonedufamokor-mubedaba-wuxonodogo-pakopabukib.pdf
    • https://cdn.shopify.com/s/files/1/0437/0120/7193/files/80376139001.pdf
    • https://cdn.shopify.com/s/files/1/0461/4841/9747/files/kuvige.pdf
    • https://cdn.shopify.com/s/files/1/0446/0707/8564/files/arabic_dictionary_hans_wehr.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/alumni_game_winter_classic_2017.pdf
    • https://cdn.shopify.com/s/files/1/0430/7704/2325/files/batusajefeloruragi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/264203852.pdf
    • https://cdn.shopify.com/s/files/1/0434/8284/1250/files/40148840112.pdf
    • https://cdn.shopify.com/s/files/1/0448/6601/1298/files/comment_apprendre_l_anglais_pour_un_dbutant.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5397/files/gatifenitokapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0432/1177/files/94323830603.pdf
    • https://cdn.shopify.com/s/files/1/0429/1775/7095/files/7982495616.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_off0000561a.bin
0dc02b9efdd88bce2535475d4f3d219222e656e6edd574f777fae7cde05db20c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x561A 5524 bytes
font_01_sfnt_off000068fc.bin
c11b2bffeff0b40b639be497d8d04a7c6155da034253bfa23aee05650567b801		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68FC 10216 bytes

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