Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0753332628b6805…

MALICIOUS

PDF

44.4 KB Created: 2020-08-14 23:06:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc8d17df691ff7d0750e74f0e5807a4e SHA-1: 85555ceb5820656e60744db1feb4253101d8ab40 SHA-256: e0753332628b680536e9cf44e3b1960b729f7c84e0752daf3a831e6221a98896
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=apowersoft+screenshot+android'. Additionally, it features a large number of links to external PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The primary intent appears to be directing users to malicious infrastructure disguised as a download for 'apowersoft screenshot android'.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=apowersoft+screenshot+android
    • http://files.doityourselfdocumentaries.com/uploads/1/3/2/7/132740423/1718c40bfb9c.pdf
    • http://files.friendschurchdoorcounty.com/uploads/1/3/1/1/131163774/fef5052a1abd5.pdf
    • http://files.glidinghbw.co.nz/uploads/1/3/1/8/131856040/9446361.pdf
    • http://files.tycymorth.org.uk/uploads/1/3/0/9/130968992/kiwapemugugi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6547/3189/files/nekifujimuviz.pdf
    • https://cdn.shopify.com/s/files/1/0452/7095/8241/files/chevening_scholarship_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/6277/8263/files/vopulitizitum.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4499/files/jujidetutafodogasu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8697/1033/files/jee_maths_formulas_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/triethylamine_msds.pdf
    • https://cdn.shopify.com/s/files/1/0429/2296/7207/files/care_credit_application_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/12605869087.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/marginal_costing_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/aspen_snow_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/no_fale_com_estranhos_livro.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_off000062b4.bin
6728b0a5e0e7e047ea245b8f1f07eef07a18cd6e19a45cce9eb6afd21619c811
pdf-font-stream PDF embedded font (sfnt) at offset 0x62B4 5080 bytes
font_01_sfnt_off000073f8.bin
7c671868d1a95d246fac31a29a6e128cec7b3ae31ff354d4ac3ab9775014ffcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x73F8 9980 bytes
font_02_sfnt_off0000961d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x961D 4324 bytes