Malicious PDF — malware analysis report

Static analysis result for SHA-256 388c9296f286b143…

MALICIOUS

PDF

40.8 KB Created: 2020-08-17 17:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c526b9a255fb98e03e4aba173f7b61b SHA-1: 8cf46bd6e104bbd12348dc0310f45b23e522d93c SHA-256: 388c9296f286b143973c002a75df4f4a6ffee5b6260f93ca9b22e742dfb36c06
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=firewall+windows++free'. This URL, combined with the document body's deceptive text about a 'Firewall windows free', strongly suggests a phishing or malware lure. The presence of a PDF link farm heuristic further indicates malicious intent to distribute links, likely to further malicious sites or to manipulate search engine results.

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.com/pify?keyword=firewall+windows++free
    • http://dasewe.onceuponatimepartiesal.com/uploads/1/3/0/7/130739655/taluwabi-xofadokevi-nozagovezenaki-bevuxovinasuw.pdf
    • http://files.adrian-spencer.com/uploads/1/3/1/4/131437318/a65ff2a.pdf
    • http://files.gabrielstrumpbooks.com/uploads/1/3/1/4/131407901/5932025.pdf
    • https://cdn.shopify.com/s/files/1/0460/6341/9547/files/ester_formation_from_carboxylic_acid_and_alcohol.pdf
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/harry_potter_deathly_hallows_google_drive.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6743/files/64265594180.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8720/files/2738825174.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/69038278677.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/zotilumulowebub.pdf
    • https://cdn.shopify.com/s/files/1/0434/8307/0630/files/cool_shoes_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0436/9822/5320/files/diagnostico_diferencial_de_anemia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.pdf
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/watipewukusuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/leguwimerewasitova.pdf
    • https://cdn.shopify.com/s/files/1/0431/6990/6854/files/51032095693.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3863/files/7569425204.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_off000062ad.bin
cd2e7caa893d345216f1c05b7ff82195c6e9ce9b1b1b8df008753e0a0d171df0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62AD 4948 bytes
font_01_sfnt_off0000739f.bin
99e15e1ae5f49925251bee4cb62849c14520d01ba5e024ee2e9b8b081b7cfe96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x739F 10272 bytes

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