PDF malware analysis — malicious · ac6ca61a5a1b02f6

MALICIOUS

PDF

48.6 KB Created: 2020-08-11 22:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 955800709d0a282d5f30cd025f131c81 SHA-1: a0d9e5f6f6e7491c79091dac9a45832b50f17a00 SHA-256: ac6ca61a5a1b02f6b5034a7c79bbe88afca24a0e48bc94f16d501302dc3ddad3

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=calistenia+para+iniciantes+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though partially corrupted, contains the same URL and text, reinforcing the lure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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=calistenia+para+iniciantes+pdf
- http://files.westviewflyingclub.com/uploads/1/3/2/8/132815004/vutimaxiriwaf-tijez-zofebejokev.pdf
- http://ludolor.kwikwashlaundromat.com/uploads/1/3/0/8/130814328/cc2068d.pdf
- http://files.shhschoir.org/uploads/1/3/1/4/131453592/liwesowibopazu.pdf
- http://files.marchingvlogs.com/uploads/1/3/0/8/130873877/tenaxanesit_dakus_xizazilozuxile_fikubi.pdf
- https://cdn.shopify.com/s/files/1/0437/2774/9274/files/canevas_de_projet_de_developpement.pdf
- https://cdn.shopify.com/s/files/1/0437/7408/3233/files/95766776667.pdf
- https://cdn.shopify.com/s/files/1/0431/6420/5216/files/93635493352.pdf
- https://cdn.shopify.com/s/files/1/0431/4424/9499/files/gotafefegiz.pdf
- https://cdn.shopify.com/s/files/1/0433/9659/5870/files/45374507832.pdf
- https://cdn.shopify.com/s/files/1/0431/0587/8173/files/soxapoluli.pdf
- https://cdn.shopify.com/s/files/1/0428/6735/9900/files/lugorujakababase.pdf
- https://cdn.shopify.com/s/files/1/0433/0445/2246/files/mimexupeworizumegivuralud.pdf
- https://cdn.shopify.com/s/files/1/0431/0705/7825/files/86000333384.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_off000066bd.bin` `582b62e950143bf4cd49bd0cf903217e1a6b1ff6c3b046910207d080cc5d15d1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66BD	5052 bytes
`font_01_sfnt_off000077b1.bin` `9159c3bbe4e617fc6ab21800076b31c718e0e83db4142b903295bba04c9b58a9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77B1	6340 bytes
`font_02_sfnt_off0000873d.bin` `256d64a4f523a049979020624abfed4e9b5274a20aeea0c95490dcedcc724c25`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x873D	2628 bytes
`font_03_sfnt_off00009262.bin` `c463e5b4983792279f2488ac1a8d5dc288666a5c38119b12e9196aaa9f4ba5a1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9262	10052 bytes

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