Malicious PDF — malware analysis report

Static analysis result for SHA-256 88826a807d37ac36…

MALICIOUS

PDF

51.9 KB Created: 2020-08-05 00:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d136b1225fd3ad0593690b4f300192fd SHA-1: 6d36fc6f38dd2a42952f71254a569a0781d64e0d SHA-256: 88826a807d37ac36ed2b357f6c1ca919be0087a31790cb28cb85402f4c10b1a2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The document contains lures for an advance-fee scam, referencing the 'Ayushman Bharat Yojana' and offering a PDF download. It embeds numerous links, with a critical heuristic identifying a link to a known malicious redirector at `https://ttraff.cc/pify?keyword=ayushman+bharat+yojana+list+2020+pdf+download`. The presence of multiple PDF links suggests an attempt to distribute malicious content or engage in SEO manipulation for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=ayushman+bharat+yojana+list+2020+pdf+download
    • http://files.washngoalabama.com/uploads/1/3/1/6/131637016/67a69fdadc0bd20.pdf
    • http://files.drdeirdra-faithcounselingllc.com/uploads/1/3/1/8/131871625/zuwimiluluf.pdf
    • http://files.wildflowerlab.com/uploads/1/3/1/4/131437889/videmugidumu_jifisigus.pdf
    • http://files.cementx.org/uploads/1/3/0/7/130739835/ee1f88a936bc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/23228741154.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/68757398444.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/9327980981.pdf
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/fafovinaxonuvofor.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7958/files/zsnes_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0441/1123/3176/files/meiosis_worksheet_answers_key.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/modern_periodic_table_of_elements_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/4719951545.pdf
    • https://cdn.shopify.com/s/files/1/0432/5860/9819/files/31796836738.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0025/files/xiwufugofoliretunas.pdf
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/35198852185.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/2997/files/77560192609.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/
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bd2.bin
9a9f8a7302b4f80f89960e949c9fa36ff22006dbcf83a4f4632410db7cbfc63b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD2 5952 bytes
font_01_sfnt_off00007ff8.bin
d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF8 3720 bytes
font_02_sfnt_off00008b5c.bin
e7f6b079b23c2caabb3abed3ea08f3f5da5deb1d804920f30f4dc2c5711a0d0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5C 10256 bytes
font_03_sfnt_off0000aeb0.bin
8f48cde3eef3580bb899a0e21d7e9b88a60d033dae318a3abdbfc50ec00c6609		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB0 5212 bytes

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