PDF malware analysis — malicious · 32377418b39daecf

MALICIOUS

PDF

52.6 KB Created: 2020-08-12 23:36:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4dc01d4879f10db964fc4d253c199dba SHA-1: 122b31011c4072c14417d2758fba1a4fcb7479fa SHA-256: 32377418b39daecf1750348ab3b349fc1b0a190eba96db7e1c784c11e05f54c4

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to a redirector service (ttraff.cc). The document body text, though partially corrupted, includes the phrase 'Learn german grammar pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or to obscure the final malicious destination.

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=learn+german+grammar+pdf
- http://files.bathhousebasics.com/uploads/1/3/2/6/132695302/gowapomuvogilirejiga.pdf
- http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
- http://files.hoodarc.org/uploads/1/3/2/6/132681660/tepesesokiga_tomoperus.pdf
- http://duzesosel.northlinefarms.com/uploads/1/3/0/7/130776873/viposojerejafofinigu.pdf
- http://files.jmbmoldings.com/uploads/1/3/1/6/131606280/4675183.pdf
- https://cdn.shopify.com/s/files/1/0430/9565/4564/files/winchester_model_97.pdf
- https://cdn.shopify.com/s/files/1/0430/7723/8945/files/detect_text_in_scanned.pdf
- https://cdn.shopify.com/s/files/1/0431/7990/1085/files/48087772888.pdf
- https://cdn.shopify.com/s/files/1/0434/1999/2222/files/jovilegezowipumebefalege.pdf
- https://cdn.shopify.com/s/files/1/0434/1671/5429/files/67884931184.pdf
- https://cdn.shopify.com/s/files/1/0434/9476/8792/files/7235576989.pdf
- https://cdn.shopify.com/s/files/1/0433/8289/8840/files/ansiedad_depresion_y_estres.pdf
- https://cdn.shopify.com/s/files/1/0430/0803/2922/files/xinalonufisajuwi.pdf
- https://cdn.shopify.com/s/files/1/0433/6277/9295/files/45095256456.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000066c2.bin` `3c2259874bd622fa39878420744b38c2d47de3b850d1362c191db175d5b7ea29`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66C2	5092 bytes
`font_01_sfnt_off000077f2.bin` `b28853663c7ef6b7be2dd11da19cf13c2cfa0cfd5c87a300468558bba80129ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77F2	5080 bytes
`font_02_sfnt_off00008a67.bin` `639aa49c682d8bb5f0838eec6b28f50214b15d6cd1562832c3bd221201093659`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A67	10248 bytes
`font_03_sfnt_off0000ad85.bin` `ca5a8f0af13e9ce8e95ea293e2ca56778b1421fe8be2f8a22551f91b2c047ef8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAD85	17180 bytes

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