Malicious PDF — malware analysis report

Static analysis result for SHA-256 b448ee83c08a2ade…

MALICIOUS

PDF

35.8 KB Created: 2020-08-25 12:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b510f9ccc4b6cf7344a85e842931b5e SHA-1: 567d4b42b0665259f732e2e874346ef452adc6fd SHA-256: b448ee83c08a2ade79d79c3163daa28063e79ff5d721ed4763583fa96a3b9386
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text related to 'Logo quiz android crowd level 3 answers' and the malicious redirector URL. This suggests a social engineering attempt to direct users to malicious content, likely for further exploitation or phishing. The presence of numerous links, many pointing to Shopify domains, indicates a link farm strategy to obscure the 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=logo+quiz+android+crowd+level+3+answers
    • http://papeli.quailhollowfarmpygoragoats.com/uploads/1/3/0/7/130775195/8979128.pdf
    • http://kapij.cardiganbayregatta.co.uk/uploads/1/3/1/4/131438096/cdc3b3557212d66.pdf
    • http://files.sweetssogeek.com/uploads/1/3/1/4/131437683/tijogapika.pdf
    • http://wewuxevij.mastech-engineering.com/uploads/1/3/0/7/130739163/sorasixukipudazam.pdf
    • http://files.doudorchard.com/uploads/1/3/2/6/132695694/bofibedekufixat.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/ziwejogonazanadaxovetawup.pdf
    • https://cdn.shopify.com/s/files/1/0438/4935/1328/files/cellulose_structure.pdf
    • https://cdn.shopify.com/s/files/1/0463/1042/4733/files/pamonamabizafi.pdf
    • https://cdn.shopify.com/s/files/1/0449/1840/7335/files/subject_verb_agreement_worksheet_for_class_4.pdf
    • https://cdn.shopify.com/s/files/1/0432/7522/3200/files/vatekukarejilo.pdf
    • https://cdn.shopify.com/s/files/1/0465/4596/1118/files/guronanodasogap.pdf
    • https://cdn.shopify.com/s/files/1/0432/0870/4164/files/cuddle_buddy_application_form_blank.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/novaform_mattress_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7701/files/84284068366.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5637/files/69139688792.pdf
    • https://cdn.shopify.com/s/files/1/0431/3818/7413/files/gta_v_cheat_codes_ps4.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_off00004ac2.bin
a7447792b4f012b745b3894d82d87a39184c39894ccae6e5aa3dd0cd2d6c0fbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC2 5540 bytes
font_01_sfnt_off00005dc5.bin
9e40548c57f01a9aee0fed0ca227c7b321b1e0d9cf5553b4ea453f73afacc04e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC5 10620 bytes