Malicious PDF — malware analysis report

Static analysis result for SHA-256 988b72a28735e8d5…

MALICIOUS

PDF

44.0 KB Created: 2020-08-02 20:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae52f4b7164ad37b73496fcf310dd1ee SHA-1: ff1f088f42278877ca4ed00495c7e6dd2edb11db SHA-256: 988b72a28735e8d59cb72e6aefdae2e382ad3a33dc1ec2cb5ac973a9f5b0df63
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=nuwave+oven+pro+manual+complete+cookbook'. The document body, though heavily obfuscated, also contains this URL. The presence of numerous links suggests a link farm or phishing attempt, aiming to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=nuwave+oven+pro+manual+complete+cookbook
    • http://files.thatspeechlady.co.uk/uploads/1/3/1/0/131069781/xugexu.pdf
    • http://files.comeshootwithme.com/uploads/1/3/1/4/131406966/selanukadenurakukaka.pdf
    • http://files.apsimarin.com/uploads/1/3/1/4/131438069/kirivi_tatukef_nanevaxalo_rekodasu.pdf
    • http://files.washingtonhighclass62.com/uploads/1/3/1/6/131637306/gikumezupes-favigo-noxutumufe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/92284732926.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/natawozojixare.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/sovuzemozemowazivevaza.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/lovasuse.pdf
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/16018077646.pdf
    • https://cdn.shopify.com/s/files/1/0429/8348/9687/files/99801605566.pdf
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/fodeminajifam.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/limapurak.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/55476623316.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32343356061.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48177964882.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/lenuxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000635c.bin
37ecfd519a925bac6643d821dad96038faabda5f554be1928ae5e99bac70ce5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x635C 5060 bytes
font_01_sfnt_off0000748c.bin
ef8f96576903ccd28850b3d8180d1f0bcd6d57d1db25b29822ade6cc2060746b
pdf-font-stream PDF embedded font (sfnt) at offset 0x748C 9360 bytes
font_02_sfnt_off00009484.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9484 4324 bytes