Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f085c8863a4b08…

MALICIOUS

PDF

40.4 KB Created: 2020-08-06 08:39:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b56d809483b1069f6e3ed536b122800 SHA-1: 2fd73202000533d5c361cfe4aa83d530aa80a459 SHA-256: 89f085c8863a4b081a6584dce08f2f80a2257e95b4a2229e29240412f0513c22
120 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body and embedded links suggest a lure related to academic material, aiming to trick users into visiting malicious sites. The presence of a link farm further indicates 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=design+and+analysis+of+algorithms+mcq+pdf
    • http://files.orangecongregationalchurchnurseryschool.com/uploads/1/3/2/7/132740423/edda32f93afd.pdf
    • http://files.gettingtogethernow.com/uploads/1/3/1/4/131409909/gejebujevijome-buvarutulowubib-lasovekazotub-gupifewawatepop.pdf
    • http://josuv.inspirationafloat.co.uk/uploads/1/3/1/4/131407067/zelejiv-satowobugo-dowexelegulajo.pdf
    • http://files.ghoddousi.com/uploads/1/3/1/3/131379820/1424354.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/benilamefiropiwuzodonej.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/paligujanake.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/bbc_compacta_class_12_english_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/webcal_mlb_am_tix_cubs_schedule_full.pdf
    • https://cdn.shopify.com/s/files/1/0440/5637/9557/files/pmgdisha_affidavit_format.pdf
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/e2_80_9cdreb1e_e2_80_9d.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/79132557323.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/96215698437.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/fupofozaresanurunufulasen.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/boston_university_campus_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/tabaliwakudinugevazevu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/modoxamirumaturafukafew.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_off00005e07.bin
1d4ad91d01c131ec27d802ccc02a061dd598c6ebb2dc946038af0be9812ecebe
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E07 5796 bytes
font_01_sfnt_off0000719e.bin
f66015037303fcd15e46319140c0d66ce4c47d9e03d8c7b8d4a9d2aa0388c7eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x719E 10244 bytes