PDF malware analysis — malicious · ba1f32ac02d8aa70

MALICIOUS

PDF

55.3 KB Created: 2020-08-03 05:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6ff1fa25c77dafda7e915a424f95f504 SHA-1: 3fcf800358e3bc5eb837f17c84ab172f75773bdf SHA-256: ba1f32ac02d8aa7059d541c7d08232fba25d0d53d2ea386ed5cf76b126218d91

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious redirection and a link farm. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector heuristic. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a lure for an 'abo study guide pdf'. The presence of numerous Shopify links suggests an attempt to obscure the malicious destination through a link farm.

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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=abo+study+guide+pdf
- http://files.collinsvillecrimsoncadets.com/uploads/1/3/0/8/130814043/womozazidiwulip.pdf
- http://files.rcknteachn.com/uploads/1/3/1/4/131437873/pamopu_sovubijefumat.pdf
- http://files.drrodchiropractic.com/uploads/1/3/1/3/131398195/9b93e.pdf
- https://cdn.shopify.com/s/files/1/0435/0892/4568/files/nakirisinilenokifari.pdf
- https://cdn.shopify.com/s/files/1/0434/2621/8134/files/10640032933.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.pdf
- https://cdn.shopify.com/s/files/1/0431/8085/1364/files/36051571584.pdf
- https://cdn.shopify.com/s/files/1/0429/6815/4278/files/finopogaz.pdf
- https://cdn.shopify.com/s/files/1/0436/2030/3011/files/wabasawuragedubexetunide.pdf
- https://cdn.shopify.com/s/files/1/0428/4855/1068/files/77063475356.pdf
- https://cdn.shopify.com/s/files/1/0436/3714/5753/files/jularoleji.pdf
- https://cdn.shopify.com/s/files/1/0430/5354/7677/files/10077145583.pdf
- https://cdn.shopify.com/s/files/1/0430/7543/6698/files/housing_contract_purdue.pdf
- https://cdn.shopify.com/s/files/1/0428/8125/3535/files/viwomokawigodanevom.pdf
- https://cdn.shopify.com/s/files/1/0431/6938/2568/files/defujisonugosezugi.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000099b8.bin` `93788175c4a098d235a65c62eddbdda6edd3e67a811037c7b411336b1602b471`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99B8	5100 bytes
`font_01_sfnt_off0000ab35.bin` `fd2251efc4bfc689a6636b2e516a9e725ebde4fd6c7ff169d4096d30aecafcf2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB35	11084 bytes

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