Malicious PDF — malware analysis report

Static analysis result for SHA-256 3350e29d66680fe2…

MALICIOUS

PDF

37.9 KB Created: 2020-08-10 01:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 426d8cbd99ee045da227dcd1b6405454 SHA-1: 6bef84e9712433286848ab4f6871833679638f59 SHA-256: 3350e29d66680fe24639fa5631f9400fdc80387112f6a838340773a51590f265
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external PDF files hosted on various domains, including a large number on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.cc'. This suggests the document is designed to funnel users through a series of links, ultimately leading them to malicious content or further compromise. The presence of a malicious redirector is the primary indicator of malicious intent.

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=absorption+chiller+catalogue+pdf
    • http://files.nataliehiningscenicdesign.com/uploads/1/3/1/3/131379249/84089319.pdf
    • http://files.unlockyourheart.com/uploads/1/3/0/7/130775629/sijil.pdf
    • http://files.informixcommunity.com/uploads/1/3/1/0/131071240/kuzipabusowegibug.pdf
    • http://famezad.japeconsulting.co.uk/uploads/1/3/1/4/131407241/nupiwiferixajorini.pdf
    • https://cdn.shopify.com/s/files/1/0452/4402/2944/files/teori_akuntansi_biaya.pdf
    • https://cdn.shopify.com/s/files/1/0437/8319/2738/files/photoshop_cs_5_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/space_engineers_connector.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6841/files/puvikevokezofiluxasufiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/7046575748.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/wejivijiliwosebap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60233972239.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/lil_herb_xxl_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/zukikej.pdf
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/57542973288.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/airline_customer_satisfaction_survey_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/52426721875.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_off0000547b.bin
b173f1bd3fb74302734c766885f2a982250f11aefb548397ed5ac8be9de347a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x547B 5544 bytes
font_01_sfnt_off0000674c.bin
fe2b4e6aaac7855a67fa66b470b7c52b5f95841ce9c573eebc148fd2331f0038
pdf-font-stream PDF embedded font (sfnt) at offset 0x674C 10384 bytes