Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfad4e32f772d811…

MALICIOUS

PDF

56.0 KB Created: 2020-08-12 07:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50769b444b2f83ff419b7fd2d91e82bd SHA-1: a90c62be451a569bc80e1c318c6321d0cfb277d6 SHA-256: dfad4e32f772d81108b393756b8864ed059362fc0dd4b1bc27fad4c219b68561
120 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which in turn points to a Shopify domain hosting further PDF files. The primary malicious link is `https://ttraff.cc/pify?keyword=english+scholastic+aptitude+test+questions+with+answers+pdf`, which is designed to lure users into downloading potentially harmful content by masquerading as educational material. The presence of a link farm further indicates a malicious intent to distribute or redirect users to malicious sites.

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=english+scholastic+aptitude+test+questions+with+answers+pdf
    • http://files.sugarcoatedkiss.com/uploads/1/3/0/7/130739450/0adba.pdf
    • http://files.gardenclubbathohio.org/uploads/1/3/1/8/131871602/jineka.pdf
    • http://files.unityofpalmyra.org/uploads/1/3/0/7/130775827/0d2098eedc2.pdf
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/91573567343.pdf
    • https://cdn.shopify.com/s/files/1/0430/6246/0577/files/30270259183.pdf
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/mogupelukakos.pdf
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/setunubovoda.pdf
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/sanudukon.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/xepixarevegikuvojomat.pdf
    • https://cdn.shopify.com/s/files/1/0454/6474/8184/files/15332797086.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/rezufotineregoxide.pdf
    • https://cdn.shopify.com/s/files/1/0430/5800/4117/files/87620001686.pdf
    • https://cdn.shopify.com/s/files/1/0432/7263/4536/files/13209213421.pdf
    • https://cdn.shopify.com/s/files/1/0432/9065/6936/files/14934000385.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/98912359071.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0807/files/low_carb_keto_food_list.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_off00009a99.bin
d8c5648e82fafcb13053499e8a17ae88c0da0bcd6056d4925995ac11770c876f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A99 5592 bytes
font_01_sfnt_off0000ada2.bin
0cb9c3f32060f0c5707090da7ce2ef53791e73482541ee8599bb6e64047c1fa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADA2 10964 bytes

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