Malicious PDF — malware analysis report

Static analysis result for SHA-256 453b1fee259cc1ed…

MALICIOUS

PDF

122.0 KB Created: 2020-08-11 01:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fdd72f74e6995182e1ca2d429580c52 SHA-1: 7c590051ec28e5551903edad3feaf12139e63a9e SHA-256: 453b1fee259cc1edb60da90d9f74336c5af174b2e06a815954149dc2f499e2ef
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.cc/pify?keyword=al+quran+bangla+translation+word+by+word+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. The presence of a link farm heuristic further supports the malicious intent of distributing traffic to external sites.

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=al+quran+bangla+translation+word+by+word+pdf
    • http://files.crjahn.com/uploads/1/3/1/1/131164236/zirorasode.pdf
    • http://files.nativitymenlo.org/uploads/1/3/2/7/132741169/bapajiteto.pdf
    • http://files.wewandertogether.com/uploads/1/3/1/3/131384583/b13e5a5.pdf
    • https://cdn.shopify.com/s/files/1/0434/6478/6086/files/biological_classification_of_organisms.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/pobokoza.pdf
    • https://cdn.shopify.com/s/files/1/0428/6038/0327/files/zatanabataxonudesak.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/vezawovogogijefole.pdf
    • https://cdn.shopify.com/s/files/1/0440/2331/6630/files/approach_to_patient_with_abdominal_pain.pdf
    • https://cdn.shopify.com/s/files/1/0433/0225/6795/files/kijikunopaxirolonamanozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/37882361399.pdf
    • https://cdn.shopify.com/s/files/1/0448/2279/0305/files/plant_virology_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/4170/9462/files/fumirosuwadositarovaxitid.pdf
    • https://cdn.shopify.com/s/files/1/0438/5941/1094/files/23012780810.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/vuluxosin.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/16443069841.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/44635360196.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00018404.bin
71e97be474246166e8683a05ba5852b3a84aaf33eefd8bad26bd63578be3a299		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18404 3188 bytes
stream_010_off0001b9ba.bin
6e07dbb96606def154c50f13b6378442bea260232099df0fd99693f84a34eba8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1B9BA 19064 bytes
font_00_sfnt_off00014a64.bin
66b0bb7f1d7a4fb89a7f02b2080ff229cd6e52b8c43e5c82ed2f1a66daa7bc49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A64 6372 bytes
font_01_sfnt_off00015fe4.bin
502573154590e35392c43475ffa807ee215db796b29dd25bb4c7d43b9df24352		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15FE4 5660 bytes
font_02_sfnt_off00017332.bin
c7e91e2d9c74a71ead7ce426e910e6e0eff1e84642fc95c71753173cbaf39e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17332 5168 bytes
font_04_sfnt_off000190df.bin
d5cff072b31a07d420cf6004698bfb3a0ad0538207393b6179a1b68236d6674d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x190DF 12732 bytes

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