Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c03ef74b9f4327…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 12:23:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9428b0919d0ecaafb247f8055d37fbe5 SHA-1: 0ea7037fc604314e02c97e940dae7cdce630858a SHA-256: e2c03ef74b9f4327adcebf1f6d669f3acb304000e3d207d84141e6b2bb62336d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=mechanical+engineering+projects+for+high+school+students+pdf'. This suggests the document is designed to trick users into visiting malicious infrastructure by posing as educational content. The presence of many links, including benign ones hosted on Shopify, indicates a link farm strategy to improve search engine ranking and distribute malicious traffic. No scripts were extracted from this sample.

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.com/pify?keyword=mechanical+engineering+projects+for+high+school+students+pdf
    • http://files.burkega.org/uploads/1/3/0/7/130739173/kikone_zodijo.pdf
    • http://files.butterflybirths.com/uploads/1/3/0/8/130814855/ravekeg.pdf
    • http://files.mikevaproduction.com/uploads/1/3/2/6/132696112/8026498.pdf
    • http://files.nraimvang.com/uploads/1/3/2/7/132740836/897e6d.pdf
    • http://files.reynard.ca/uploads/1/3/1/4/131454373/lusumejikan.pdf
    • https://cdn.shopify.com/s/files/1/0437/7044/5973/files/nudefusezubaserosagu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5076/1377/files/54482172358.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4540/files/one_way_anova_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/56175673556.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/canon_8800f_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/96050308308.pdf
    • https://cdn.shopify.com/s/files/1/0454/1775/8888/files/avengers_infinity_war_2_comic_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/fonurereraka.pdf
    • https://cdn.shopify.com/s/files/1/0431/0722/1661/files/dynamic_business_law_kubasek.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/personal_anecdote_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/statistical_quality_control_by_m_mahajan.pdf
    • https://cdn.shopify.com/s/files/1/0446/2955/7411/files/warfarin_dosing_nomogram.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_off00006555.bin
244676aaef253270bd4d84c59f8082e05aa772f89054e60a3d4a6592dc26daa4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6555 5380 bytes
font_01_sfnt_off00007797.bin
9eea455882347804081b3d28244342fbc12e0e9ae4199a7290f6c607fc7226a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7797 10240 bytes
font_02_sfnt_off00009a86.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A86 4324 bytes